V4L/DVB (8770): cx18: get rid of ununsed buffers stolen field

cx18: get rid of ununsed buffers stolen field.  It's an unused holdover
from ivtv.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/cx18/cx18-driver.h

@@ -259,7 +259,6 @@ struct cx18_stream {
 	/* Buffer Stats */
 	u32 buffers;
 	u32 buf_size;
-	u32 buffers_stolen;
 
 	/* Buffer Queues */
 	struct cx18_queue q_free;	/* free buffers */

drivers/media/video/cx18/cx18-streams.c

@@ -432,7 +432,6 @@ int cx18_start_v4l2_encode_stream(struct cx18_stream *s)
 	default:
 		return -EINVAL;
 	}
-	s->buffers_stolen = 0;
 
 	/* mute/unmute video */
 	cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2,