[!!!][TASK] Remove TCA + DB definition for pages_language_overlay

The TCA schema and the database of page translations within "pages_language_overlay"
was still available for legacy reasons, but is now gone.

Resolves: #91479
Releases: master
Change-Id: Id330273f9bf72335b685c43f819080bca2864adb
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64586


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>

typo3/sysext/core/Classes/Database/Schema/SchemaMigrator.php

@@ -267,11 +267,6 @@ class SchemaMigrator
         $tables = $defaultTcaSchema->enrich($tables);
         // Ensure the default TCA fields are ordered
         foreach ($tables as $k => $table) {
-            // @deprecated since v10 and will be removed in TYPO3 v11. "pages_language_overlay" is not to be added anymore in TYPO3 v10.
-            if ($table->getName() === 'pages_language_overlay') {
-                unset($tables[$k]);
-                continue;
-            }
             $prioritizedColumnNames = $defaultTcaSchema->getPrioritizedFieldNames($table->getName());
             // no TCA table
             if (empty($prioritizedColumnNames)) {

typo3/sysext/core/Documentation/Changelog/master/Breaking-91473-DeprecatedFunctionalityRemoved.rst

@@ -37,7 +37,7 @@ The following class methods have changed visibility:
 
 The following class properties have changed visibility:
 
-The following VieHelpers have changed:
+The following ViewHelpers have changed:
 
 The following scheduler tasks have been removed:
 
@@ -198,6 +198,8 @@ The following database tables have been removed:
 
 The following database fields have been removed:
 
+- pages.legacy_overlay_uid
+
 The following php doc annotations have been removed:
 
 The following global JavaScript functions have been removed:

typo3/sysext/core/ext_tables.sql

@@ -112,8 +112,6 @@ CREATE TABLE pages (
 	backend_layout varchar(64) DEFAULT '' NOT NULL,
 	backend_layout_next_level varchar(64) DEFAULT '' NOT NULL,
 	tsconfig_includes text,
-	# @deprecated since v9 and will be removed in TYPO3 v11. Legacy connection UID field to pages_language_overlay table
-	legacy_overlay_uid int(11) unsigned DEFAULT '0' NOT NULL,
 
 	KEY determineSiteRoot (is_siteroot),
 	KEY language_identifier (l10n_parent,sys_language_uid),