undo mac80211.sh replacement
partially revert this commit: https://git.c3pb.de/freifunk-pb/ffpb-packages/commit/5a5b970202c51d1dd17698cb790438d35c4d8cca
partially revert this commit: https://git.c3pb.de/freifunk-pb/ffpb-packages/commit/5a5b970202c51d1dd17698cb790438d35c4d8cca