[BLOCK] Cleanup unused variable passing

- ->init_queue() does not need the elevator passed in
- ->put_request() is a hot path and need not have the queue passed in
- cfq_update_io_seektime() does not need cfqd passed in

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/block/as-iosched.c b/block/as-iosched.c
index 50b95e4c..0024211 100644
--- a/block/as-iosched.c
+++ b/block/as-iosched.c
@@ -1317,7 +1317,7 @@
 /*
  * initialize elevator private data (as_data).
  */
-static void *as_init_queue(request_queue_t *q, elevator_t *e)
+static void *as_init_queue(request_queue_t *q)
 {
 	struct as_data *ad;