Remove accessibility scanning job for now
@jandt-desy This removes the job as requested in https://gitlab.hzdr.de/hifis/overall/hifis.net/-/issues/66#note_2159875.
@jandt-desy This removes the job as requested in https://gitlab.hzdr.de/hifis/overall/hifis.net/-/issues/66#note_2159875.