(dvd/omx)player: drop old group id handling

Timestamps are contiguous all the time, so this is not needed
dvdplayer: drop old unused autosync method used to distrust timestamps
dvdplayer: drop old never used PROFILE code
dvdplayer: drop old ifdef out NV12/YUY2 testing code
dvdplayer: drop now unused maxfps/limited variables
dvdplayer: AutoCrop before waiting for buffer