[media] tc358743: remove unused variable

The bt pointer was never used, remove it.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/i2c/tc358743.c

@@ -1347,7 +1347,6 @@ static int tc358743_s_dv_timings(struct v4l2_subdev *sd,
 				 struct v4l2_dv_timings *timings)
 {
 	struct tc358743_state *state = to_state(sd);
-	struct v4l2_bt_timings *bt;
 
 	if (!timings)
 		return -EINVAL;
@@ -1361,8 +1360,6 @@ static int tc358743_s_dv_timings(struct v4l2_subdev *sd,
 		return 0;
 	}
 
-	bt = &timings->bt;
-
 	if (!v4l2_valid_dv_timings(timings,
 				&tc358743_timings_cap, NULL, NULL)) {
 		v4l2_dbg(1, debug, sd, "%s: timings out of range\n", __func__);