* Remove deprecated require_once call

Resolves: #56835
Releases: 6.2
Change-Id: I7d79b4c9947c5f3da82c66a4dbb0e3d2e0fd9284
Reviewed-on: https://review.typo3.org/28313
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind