[!!!][TASK] Drop 'recursive delete' backend user setting

The 'you can not delete pages that have sub pages' user
settings restriction has been annoying ever since. Users
who actually want to delete a full tree were annoyed by
this flag if they did not had it and had to rely on an
administrator action to actually give it to them, and
had to delete pages on a one-by-one base meanwhile.
Clever admins thus often enabled that flag by default.

It was meant as a feature to prevent casual users from
commiting accidential harm to a site tree. There are
better ways to achieve this goal however: Admins
can set proper access rights for important key pages
preventing editors from deleting them. Furthermore,
a better 'prevent editors from doing harm in live'
way is available by using the workspaces extension. And,
in case of accidental deletion, admins can always
resurrect full page trees using the recycler extension.

The patch drops the 'recursive delete' option from
specific user settings and always allows deleting
pages including sub pages.

Resolves: #92560
Releases: master
Change-Id: I8401edc10daece7f83d0c5f85f99129616fac957
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66136


Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Benni Mack <benni@typo3.org>