block: get rid of blk_queued_rq()

No point in hiding what this does, just open code it in the
one spot where we are still using it.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 2600cba..b49f5bd 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -692,7 +692,7 @@ void blk_mq_requeue_request(struct request *rq, bool kick_requeue_list)
 	/* this request will be re-inserted to io scheduler queue */
 	blk_mq_sched_requeue_request(rq);
 
-	BUG_ON(blk_queued_rq(rq));
+	BUG_ON(!list_empty(&rq->queuelist));
 	blk_mq_add_to_requeue_list(rq, true, kick_requeue_list);
 }
 EXPORT_SYMBOL(blk_mq_requeue_request);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index e0c661a..c675e2b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -673,8 +673,6 @@ static inline bool blk_account_rq(struct request *rq)
 
 #define blk_rq_cpu_valid(rq)	((rq)->cpu != -1)
 #define blk_bidi_rq(rq)		((rq)->next_rq != NULL)
-/* rq->queuelist of dequeued request must be list_empty() */
-#define blk_queued_rq(rq)	(!list_empty(&(rq)->queuelist))
 
 #define list_entry_rq(ptr)	list_entry((ptr), struct request, queuelist)