[TASK] Reports: Remove class divider from headline

H2/H3.divider should not be allowed: remove class

Resolves: #63255
Releases: master
Change-Id: I89b2de2ed2b3f6bc774a3db2125a0d75be45f4c5
Reviewed-on: http://review.typo3.org/34541
Reviewed-by: Mathias Schreiber <mathias.schreiber@wmdb.de>
Tested-by: Mathias Schreiber <mathias.schreiber@wmdb.de>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>