[media] omap_vout: Remove an obsolete comment

This comment mentions a field that doesn't exist, and talks about
videodev.h that got removed. So, it doesn't make any sense to keep
it.
Reviewed-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/omap/omap_vout.c

@@ -2230,7 +2230,6 @@ static int __init omap_vout_setup_video_data(struct omap_vout_device *vout)
 
 	strlcpy(vfd->name, VOUT_NAME, sizeof(vfd->name));
 
-	/* need to register for a VID_HARDWARE_* ID in videodev.h */
 	vfd->fops = &omap_vout_fops;
 	vfd->v4l2_dev = &vout->vid_dev->v4l2_dev;
 	mutex_init(&vout->lock);