[PATCH] get rid of unused request_queue field queue_wait

From Lou Langholtz <ldl@aros.net>

The queue_wait field of struct request_queue is not used anymore, and
this gets rid of it.

drivers/block/ll_rw_blk.c

@@ -225,7 +225,6 @@ void blk_queue_make_request(request_queue_t * q, make_request_fn * mfn)
 	 */
 	blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
 
-	init_waitqueue_head(&q->queue_wait);
 	INIT_LIST_HEAD(&q->plug_list);
 }
 

include/linux/blkdev.h

@@ -337,8 +337,6 @@ struct request_queue
 	unsigned long		seg_boundary_mask;
 	unsigned int		dma_alignment;
 
-	wait_queue_head_t	queue_wait;
-
 	struct blk_queue_tag	*queue_tags;
 
 	/*