[!!!][TASK] Remove fixVersioningPid in FE and BE

The methods `PageRepository->fixVersioningPid()` and
`BackendUtility::fixVersioningPid` are removed,
because they are not needed anymore since TYPO3 v11.0
with the removal of various VersionState (t3ver_state).

Resolves: #96120
Related: #92598
Releases: master
Change-Id: I029169563e094b42a2e8a1a52d0a6533984436d9
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/72341


Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>