[media] media: v4l2-dev.h: remove V4L2_FL_USE_FH_PRIO flag

Since none of the drivers are using it, this flag can be removed.
Signed-off-by: Ramakrishnan Muthukrishnan <ramakrmu@cisco.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

include/media/v4l2-dev.h

@@ -44,8 +44,6 @@ struct v4l2_ctrl_handler;
 #define V4L2_FL_REGISTERED	(0)
 /* file->private_data points to struct v4l2_fh */
 #define V4L2_FL_USES_V4L2_FH	(1)
-/* Use the prio field of v4l2_fh for core priority checking */
-#define V4L2_FL_USE_FH_PRIO	(2)
 
 /* Priority helper functions */