diff --git a/typo3/sysext/install/Classes/Controller/Action/AbstractAction.php b/typo3/sysext/install/Classes/Controller/Action/AbstractAction.php
index 5b69dcbeac51164462c768eaddd21e4e603f9acf..2e75b8b163f78c0d3ea1d3412cecb1ea6d5c93b9 100644
--- a/typo3/sysext/install/Classes/Controller/Action/AbstractAction.php
+++ b/typo3/sysext/install/Classes/Controller/Action/AbstractAction.php
@@ -186,30 +186,6 @@ abstract class AbstractAction implements ActionInterface
         return $context;
     }
 
-    /**
-     * Get database instance.
-     * Will be initialized if it does not exist yet.
-     *
-     * @return \TYPO3\CMS\Core\Database\DatabaseConnection
-     */
-    protected function getDatabaseConnection()
-    {
-        static $database;
-        if (!is_object($database)) {
-            /** @var \TYPO3\CMS\Core\Database\DatabaseConnection $database */
-            $database = GeneralUtility::makeInstance(\TYPO3\CMS\Core\Database\DatabaseConnection::class);
-            $database->setDatabaseUsername($GLOBALS['TYPO3_CONF_VARS']['DB']['Connections']['Default']['user']);
-            $database->setDatabasePassword($GLOBALS['TYPO3_CONF_VARS']['DB']['Connections']['Default']['password']);
-            $database->setDatabaseHost($GLOBALS['TYPO3_CONF_VARS']['DB']['Connections']['Default']['host']);
-            $database->setDatabasePort($GLOBALS['TYPO3_CONF_VARS']['DB']['Connections']['Default']['port']);
-            $database->setDatabaseSocket($GLOBALS['TYPO3_CONF_VARS']['DB']['Connections']['Default']['unix_socket']);
-            $database->setDatabaseName($GLOBALS['TYPO3_CONF_VARS']['DB']['Connections']['Default']['dbname']);
-            $database->initialize();
-            $database->connectDB();
-        }
-        return $database;
-    }
-
     /**
      * Some actions like the database analyzer and the upgrade wizards need additional
      * bootstrap actions performed.
diff --git a/typo3/sysext/install/Classes/Controller/Action/Tool/UpgradeWizard.php b/typo3/sysext/install/Classes/Controller/Action/Tool/UpgradeWizard.php
index 05b0f1a2c61f8f9e99a9b8680f1577e2687abca4..fc8fd6c6737be5906dfd809b779fbd54f4dc4325 100644
--- a/typo3/sysext/install/Classes/Controller/Action/Tool/UpgradeWizard.php
+++ b/typo3/sysext/install/Classes/Controller/Action/Tool/UpgradeWizard.php
@@ -284,8 +284,6 @@ class UpgradeWizard extends Action\AbstractAction
      */
     protected function performUpdate()
     {
-        $this->getDatabaseConnection()->store_lastBuiltQuery = true;
-
         $wizardIdentifier = $this->postValues['values']['identifier'];
         $className = $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/install']['update'][$wizardIdentifier];
         $updateObject = $this->getUpdateObjectInstance($className, $wizardIdentifier);
@@ -336,8 +334,6 @@ class UpgradeWizard extends Action\AbstractAction
 
         $this->view->assign('wizardData', $wizardData);
 
-        $this->getDatabaseConnection()->store_lastBuiltQuery = false;
-
         // Next update wizard, if available
         $nextUpdate = $this->getNextUpdateInstance($updateObject);
         $nextUpdateIdentifier = '';