block: remove 'q' parameter from kblockd_schedule_*_work()

The queue parameter is never used, just get rid of it.

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index e0985f1..5063a0b 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -908,7 +908,7 @@
 {
 	if (cfqd->busy_queues) {
 		cfq_log(cfqd, "schedule dispatch");
-		kblockd_schedule_work(cfqd->queue, &cfqd->unplug_work);
+		kblockd_schedule_work(&cfqd->unplug_work);
 	}
 }