diff --git a/typo3/sysext/core/Classes/Localization/LocalizationFactory.php b/typo3/sysext/core/Classes/Localization/LocalizationFactory.php
index 91a1dd39e3e4ec1396f55154ec381b1102001e0a..c37c5876d1ca5323781016e3f51b967d648b89cf 100644
--- a/typo3/sysext/core/Classes/Localization/LocalizationFactory.php
+++ b/typo3/sysext/core/Classes/Localization/LocalizationFactory.php
@@ -79,24 +79,6 @@ class LocalizationFactory implements \TYPO3\CMS\Core\SingletonInterface
      */
     public function getParsedData($fileReference, $languageKey, $charset = '', $errorMode = 0, $isLocalizationOverride = false)
     {
-        // @deprecated since CMS 7, will be removed with CMS 8
-        // this is a fallback to convert references to old 'cms' locallang files to the new location
-        if (strpos($fileReference, 'EXT:cms') === 0) {
-            $mapping = [
-                'cms/web_info/loallang.xlf' => 'frontend/Resources/Private/Language/locallang_webinfo.xlf',
-                'cms/locallang_ttc.xlf' => 'frontend/Resources/Private/Language/locallang_ttc.xlf',
-                'cms/locallang_tca.xlf' => 'frontend/Resources/Private/Language/locallang_tca.xlf',
-                'cms/layout/locallang_db_new_content_el.xlf' => 'backend/Resources/Private/Language/locallang_db_new_content_el.xlf',
-                'cms/layout/locallang.xlf' => 'backend/Resources/Private/Language/locallang_layout.xlf',
-                'cms/layout/locallang_mod.xlf' => 'backend/Resources/Private/Language/locallang_mod.xlf',
-                'cms/locallang_csh_webinfo.xlf' => 'frontend/Resources/Private/Language/locallang_csh_webinfo.xlf',
-                'cms/locallang_csh_weblayout.xlf' => 'frontend/Resources/Private/Language/locallang_csh_weblayout.xlf',
-            ];
-            $filePath = substr($fileReference, 4);
-            GeneralUtility::deprecationLog('There is a reference to "' . $fileReference . '", which has been moved to "EXT:' . $mapping[$filePath] . '". This fallback will be removed with CMS 8.');
-            $fileReference = 'EXT:' . $mapping[$filePath];
-        }
-
         $hash = md5($fileReference . $languageKey . $charset);
         $this->errorMode = $errorMode;
 
diff --git a/typo3/sysext/core/Classes/Localization/Parser/LocallangArrayParser.php b/typo3/sysext/core/Classes/Localization/Parser/LocallangArrayParser.php
deleted file mode 100644
index cffd7f77e5c6913ee9a59e099d0c9d769b205307..0000000000000000000000000000000000000000
--- a/typo3/sysext/core/Classes/Localization/Parser/LocallangArrayParser.php
+++ /dev/null
@@ -1,236 +0,0 @@
-<?php
-namespace TYPO3\CMS\Core\Localization\Parser;
-
-/*
- * This file is part of the TYPO3 CMS project.
- *
- * It is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License, either version 2
- * of the License, or any later version.
- *
- * For the full copyright and license information, please read the
- * LICENSE.txt file that was distributed with this source code.
- *
- * The TYPO3 project - inspiring people to share!
- */
-
-use TYPO3\CMS\Core\Charset\CharsetConverter;
-use TYPO3\CMS\Core\Utility\GeneralUtility;
-use TYPO3\CMS\Core\Utility\PathUtility;
-
-/**
- * Parser for PHP locallang array.
- *
- * @deprecated since TYPO3 CMS 7, this file will be removed in TYPO3 CMS 8. Please use XLF files for
- * translation handling. Also note that the extension "extdeveval" has a converter from PHP and XML to XLF.
- */
-class LocallangArrayParser implements LocalizationParserInterface
-{
-    /**
-     * @var string
-     */
-    protected $cacheFileName;
-
-    /**
-     * @var \TYPO3\CMS\Core\Charset\CharsetConverter
-     */
-    protected $csConvObj;
-
-    /**
-     * @var string
-     */
-    protected $hashSource;
-
-    /**
-     * @var string
-     */
-    protected $sourceCharset;
-
-    /**
-     * @var string
-     */
-    protected $targetCharset;
-
-    /**
-     * Initializes the parser.
-     *
-     * @deprecated since TYPO3 CMS 7, will be removed in TYPO3 CMS 8. Use xlf format for parsing translations
-     */
-    public function __construct()
-    {
-        GeneralUtility::logDeprecatedFunction();
-        $this->createCsConvObject();
-    }
-
-    /**
-     * Returns parsed representation of PHP locallang file.
-     *
-     * @param string $sourcePath Source file path
-     * @param string $languageKey Language key
-     * @param string $charset Charset
-     * @return array
-     * @throws \RuntimeException
-     */
-    public function getParsedData($sourcePath, $languageKey, $charset = '')
-    {
-        $this->validateParameters($sourcePath, $languageKey);
-        $this->setCharsets($languageKey, $charset);
-        $this->generateCacheFileName($sourcePath, $languageKey);
-        if (!file_exists($this->cacheFileName)) {
-            $LOCAL_LANG = $this->generateCacheFile($sourcePath, $languageKey);
-        } else {
-            $LOCAL_LANG = $this->getContentFromCacheFile();
-        }
-        $xliff = $this->convertToXLIFF($LOCAL_LANG);
-        return $xliff;
-    }
-
-    /**
-     * Converts the LOCAL_LANG array to XLIFF structure.
-     *
-     * @param array $LOCAL_LANG
-     * @return array
-     */
-    protected function convertToXLIFF(array $LOCAL_LANG)
-    {
-        foreach ($LOCAL_LANG as &$keysLabels) {
-            foreach ($keysLabels as &$label) {
-                $label = array(
-                    0 => array(
-                        'target' => $label
-                    )
-                );
-            }
-            unset($label);
-        }
-        return $LOCAL_LANG;
-    }
-
-    /**
-     * Creates a character conversion object.
-     *
-     * @return void
-     */
-    protected function createCsConvObject()
-    {
-        if (is_object($GLOBALS['LANG'])) {
-            $this->csConvObj = $GLOBALS['LANG']->csConvObj;
-        } elseif (is_object($GLOBALS['TSFE'])) {
-            $this->csConvObj = $GLOBALS['TSFE']->csConvObj;
-        } else {
-            $this->csConvObj = GeneralUtility::makeInstance(CharsetConverter::class);
-        }
-    }
-
-    /**
-     * Generates the cache file.
-     *
-     * @param string $sourcePath
-     * @param string $languageKey
-     * @return array
-     * @throws \RuntimeException
-     */
-    protected function generateCacheFile($sourcePath, $languageKey)
-    {
-        $LOCAL_LANG = array();
-        // Get PHP data
-        include $sourcePath;
-        if (!is_array($LOCAL_LANG)) {
-            $fileName = PathUtility::stripPathSitePrefix($sourcePath);
-            throw new \RuntimeException('TYPO3 Fatal Error: "' . $fileName . '" is no TYPO3 language file!', 1308898491);
-        }
-        // Converting the default language (English)
-        // This needs to be done for a few accented loan words and extension names
-        if (is_array($LOCAL_LANG['default']) && $this->targetCharset !== 'utf-8') {
-            foreach ($LOCAL_LANG['default'] as &$labelValue) {
-                $labelValue = $this->csConvObj->conv($labelValue, 'utf-8', $this->targetCharset);
-            }
-            unset($labelValue);
-        }
-        if ($languageKey !== 'default' && is_array($LOCAL_LANG[$languageKey]) && $this->sourceCharset !== $this->targetCharset) {
-            foreach ($LOCAL_LANG[$languageKey] as &$labelValue) {
-                $labelValue = $this->csConvObj->conv($labelValue, $this->sourceCharset, $this->targetCharset);
-            }
-            unset($labelValue);
-        }
-        // Cache the content now:
-        if (isset($LOCAL_LANG[$languageKey])) {
-            $serContent = array('origFile' => $this->hashSource, 'LOCAL_LANG' => array('default' => $LOCAL_LANG['default'], $languageKey => $LOCAL_LANG[$languageKey]));
-        } else {
-            $serContent = array('origFile' => $this->hashSource, 'LOCAL_LANG' => array('default' => $LOCAL_LANG['default']));
-        }
-        $res = GeneralUtility::writeFileToTypo3tempDir($this->cacheFileName, serialize($serContent));
-        if ($res) {
-            throw new \RuntimeException('TYPO3 Fatal Error: "' . $res, 1308898501);
-        }
-        return $LOCAL_LANG;
-    }
-
-    /**
-     * Generates the name of the cached file.
-     *
-     * @param string $sourcePath
-     * @param string $languageKey
-     * @return void
-     */
-    protected function generateCacheFileName($sourcePath, $languageKey)
-    {
-        $this->hashSource = PathUtility::stripPathSitePrefix($sourcePath) . '|' . date('d-m-Y H:i:s', filemtime($sourcePath)) . '|version=2.3';
-        $this->cacheFileName = PATH_site . 'typo3temp/llxml/' . substr(basename($sourcePath), 10, 15) . '_' . GeneralUtility::shortMD5($this->hashSource) . '.' . $languageKey . '.' . $this->targetCharset . '.cache';
-    }
-
-    /**
-     * Obtains the content from the cache file.
-     *
-     * @return array
-     */
-    protected function getContentFromCacheFile()
-    {
-        $serContent = (array)unserialize(file_get_contents($this->cacheFileName));
-        $LOCAL_LANG = $serContent['LOCAL_LANG'];
-        return (array)$LOCAL_LANG;
-    }
-
-    /**
-     * Checks if the file is within the web root.
-     *
-     * @param string $fileName
-     * @return bool
-     */
-    protected function isWithinWebRoot($fileName)
-    {
-        return (bool)GeneralUtility::getFileAbsFileName($fileName);
-    }
-
-    /**
-     * Sets character sets for the language key.
-     *
-     * @param string $languageKey
-     * @param string $charset
-     * @return void
-     */
-    protected function setCharsets($languageKey, $charset)
-    {
-        $this->sourceCharset = $this->csConvObj->parse_charset($this->csConvObj->charSetArray[$languageKey] ?: 'utf-8');
-        if ($charset) {
-            $this->targetCharset = $this->csConvObj->parse_charset($charset);
-        } else {
-            $this->targetCharset = 'utf-8';
-        }
-    }
-
-    /**
-     * Validates parameters for the function.
-     *
-     * @param string $sourcePath
-     * @param string $languageKey
-     * @return void
-     * @throws \RuntimeException
-     */
-    protected function validateParameters($sourcePath, $languageKey)
-    {
-        if (!$this->isWithinWebRoot($sourcePath) || !@is_file($sourcePath) || !$languageKey) {
-            throw new \RuntimeException(sprintf('Invalid source path (%s) or languageKey (%s)', $sourcePath, $languageKey), 1309245002);
-        }
-    }
-}
diff --git a/typo3/sysext/core/Documentation/Changelog/master/Breaking-72412-RemovedDeprecatedCodeFromLanguageProcessingFunctions.rst b/typo3/sysext/core/Documentation/Changelog/master/Breaking-72412-RemovedDeprecatedCodeFromLanguageProcessingFunctions.rst
new file mode 100755
index 0000000000000000000000000000000000000000..381a6d8c0c13b3d05bb7f9b7cce986b0cfd0c982
--- /dev/null
+++ b/typo3/sysext/core/Documentation/Changelog/master/Breaking-72412-RemovedDeprecatedCodeFromLanguageProcessingFunctions.rst
@@ -0,0 +1,37 @@
+=============================================================================
+Breaking: #72412 - Removed deprecated code from language processing functions
+=============================================================================
+
+Description
+===========
+
+The following deprecated code has been removed:
+
+* ``LocalizationFactory::getParsedData`` no support for moved language files
+* class ``LocallangArrayParser`` has been removed completely
+
+The following deprecated methods have been removed:
+
+* ``LanguageService::localizedFileRef``
+
+
+Impact
+======
+
+Using old locations of language file will result in no text being displayed.
+Using the removed class will result in a fatal error.
+Using the methods above directly in any third party extension will result in a fatal error.
+
+
+Affected Installations
+======================
+
+Instances which use old locations of language files, instances which use the removed class LocallangArrayParser,  instances which use calls to the methods above.
+
+
+Migration
+=========
+
+``LocalizationFactory::getParsedData`` only supports the new location of language files
+``LocallangArrayParser`` use XLIFF language files now
+``\TYPO3\CMS\Lang\LanguageService::localizedFileRef`` no replacement; not needed when XLIFF files are used
diff --git a/typo3/sysext/lang/Classes/LanguageService.php b/typo3/sysext/lang/Classes/LanguageService.php
old mode 100644
new mode 100755
index 694b662e84a3721bc9ccd4fc7f57a766cc41de75..dbbc7ccef0e42ef0ccdf91e093f8b067c824fbb1
--- a/typo3/sysext/lang/Classes/LanguageService.php
+++ b/typo3/sysext/lang/Classes/LanguageService.php
@@ -172,7 +172,7 @@ class LanguageService
      *
      * @param string $str Input string
      * @return string Output string
-     * @deprecated since TYPO3 v8, will be removed in v9
+     * @deprecated since TYPO3 CMS 8, will be removed in TYPO3 CMS 9
      */
     public function makeEntities($str)
     {
@@ -264,12 +264,6 @@ class LanguageService
                 // Getting data if not cached
             if (!isset($this->LL_files_cache[$parts[0]])) {
                 $this->LL_files_cache[$parts[0]] = $this->readLLfile($parts[0]);
-                    // If the current language is found in another file, load that as well:
-                $lFileRef = $this->localizedFileRef($parts[0]);
-                if ($lFileRef && $this->LL_files_cache[$parts[0]][$this->lang] === 'EXT') {
-                    $tempLL = $this->readLLfile($lFileRef);
-                    $this->LL_files_cache[$parts[0]][$this->lang] = $tempLL[$this->lang];
-                }
             }
             $output = $this->getLLL($parts[1], $this->LL_files_cache[$parts[0]]);
         } else {
@@ -370,12 +364,6 @@ class LanguageService
                 ArrayUtility::mergeRecursiveWithOverrule($globalLanguage, $localLanguage);
             } else {
                 $globalLanguage = $localLanguage;
-            }
-                // Localized addition?
-            $lFileRef = $this->localizedFileRef($fileRef);
-            if ($lFileRef && (string)$globalLanguage[$this->lang] === 'EXT') {
-                $localLanguage = $this->readLLfile($lFileRef);
-                ArrayUtility::mergeRecursiveWithOverrule($globalLanguage, $localLanguage);
             }
                 // Merge local onto default
             if ($mergeLocalOntoDefault && $this->lang !== 'default' && is_array($globalLanguage[$this->lang]) && is_array($globalLanguage['default'])) {
@@ -430,23 +418,6 @@ class LanguageService
         return $localLanguage;
     }
 
-    /**
-     * Returns localized fileRef (.[langkey].php)
-     *
-     * @param string $fileRef Filename/path of a 'locallang.php' file
-     * @return string Input filename with a '.[lang-key].php' ending added if $this->lang is not 'default'
-     * @deprecated since TYPO3 CMS 7, this method will be removed in CMS 8. Please use XLF files for translation handling.
-     */
-    protected function localizedFileRef($fileRef)
-    {
-        if ($this->lang !== 'default' && substr($fileRef, -4) === '.php') {
-            GeneralUtility::logDeprecatedFunction();
-            return substr($fileRef, 0, -4) . '.' . $this->lang . '.php';
-        } else {
-            return null;
-        }
-    }
-
     /**
      * Overrides a label.
      *