[TASK] Remove unimplemented function in FormEngine

There is a function wrapLabels which does not do
anything for ages.
As it is empty, I suggest to remove it completely
instead of deprecating it.

Releases: master
Resolves: #61891
Change-Id: Ic0ebb366f663f43803321d823bb6d41ec579b052
Reviewed-on: http://review.typo3.org/32976
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>