blk-mq: mark __blk_mq_complete_request() static

It's no longer used outside of blk-mq core.

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 86bd5b2..3ae09de 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -358,7 +358,7 @@
 	put_cpu();
 }
 
-void __blk_mq_complete_request(struct request *rq)
+static void __blk_mq_complete_request(struct request *rq)
 {
 	struct request_queue *q = rq->q;
 
diff --git a/block/blk-mq.h b/block/blk-mq.h
index b44dce1..713820b 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -25,7 +25,6 @@
 	struct kobject		kobj;
 } ____cacheline_aligned_in_smp;
 
-void __blk_mq_complete_request(struct request *rq);
 void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async);
 void blk_mq_freeze_queue(struct request_queue *q);
 void blk_mq_free_queue(struct request_queue *q);