[BUGFIX] Remove button group in image-cropper

If labels on the crop buttons are too long or if there are more
buttons then the btn-group breaks the view.

Resolves: #69991
Releases: master
Change-Id: Ie0e01eeb351aa5a3fed4c67beab32b4acb63e557
Reviewed-on: https://review.typo3.org/43453


Reviewed-by: Andreas Bouche <andreas.bouche@flagbit.de>
Tested-by: Andreas Bouche <andreas.bouche@flagbit.de>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>