[TASK] Remove leftover page/branch versioning code

There are several places within EXT:version and DataHandler
which try to do "pageVersionizing" but it's not possible
anymore (see removed code in "new" section of DataHandlerHook)
since TYPO3 v7.

This also means that the `versioning_followPages` option is removed
completely from the Core.

Resolves: #78524
Releases: master
Change-Id: I6166e198fc74922aa34e2ae49440e4c0fe4354a6
Reviewed-on: https://review.typo3.org/50462


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>