[TASK] Deprecate signals during extension installation

The database handling and comparison was streamlined with patch
https://review.typo3.org/57429/. The extension manager uses the
global database compare action after an extension was activated.
For that reason we do not have to maintain a couple of duplicated
signals anymore and can mark them as deprecated.

Resolves: #85462
Releases: master
Change-Id: I7f6d814c43b530bb51737b3457b89c8075c364e7
Reviewed-on: https://review.typo3.org/57671


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Helmut Hummel <typo3@helhum.io>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>