[FOLLOWUP][TASK] Use native trigger_error and ErrorHandler for deprecations

The patch added a superfluous switch/case entry which is unnecessary.

Resolves: #82438
Releases: master
Change-Id: Ib2ac2503fa3ccb8ce2605e95163a29062a71cb8a
Reviewed-on: https://review.typo3.org/54297


Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>