media: ccs: Drop re-entrant s_stream support

The s_stream is called to enable and to disable streaming on a sub-device.
The caller may only call it to change the state, enabling streaming is not
allowed when it is already disabled, and similarly for disabling
streaming. Remove the check from the CCS driver.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/i2c/ccs/ccs-core.c

@@ -1903,9 +1903,6 @@ static int ccs_set_stream(struct v4l2_subdev *subdev, int enable)
 	struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
 	int rval;
 
-	if (sensor->streaming == enable)
-		return 0;
-
 	if (!enable) {
 		ccs_stop_streaming(sensor);
 		sensor->streaming = false;