Breaking: #63835 - Remove Deprecated Parts in Extbase Persistence Layer 

See forge#63835

Description 

The previously deprecated functions TYPO3\CMS\Extbase\Persistence\Generic\Backend->setDeletedObjects() and TYPO3\CMS\Extbase\Persistence\Repository->replace() inside the Persistence Layer of Extbase have been removed. The protected property "session" inside TYPO3\CMS\Extbase\Persistence\Repository has been removed as well.

Impact 

Any direct calls to the methods will now exit with a PHP Fatal Error.