Revert "[BUGFIX] Fix language of placeholder for relations"

This reverts commit 5be3ec13.

Further issues popped up in the master patch.

Reverts: #75040
Releases: master
Change-Id: I8ed284060b9b8ef018f4097c772032e81e3e885b
Reviewed-on: https://review.typo3.org/54826


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