[PATCH] devfs: Last little devfs cleanups throughout the kernel tree.

Just removes a few unused #defines and fixes some comments due to
devfs now being gone.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 3ed2e53..c99bf9f 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -167,7 +167,7 @@
 	bioset_free(dm_set);
 
 	if (unregister_blkdev(_major, _name) < 0)
-		DMERR("devfs_unregister_blkdev failed");
+		DMERR("unregister_blkdev failed");
 
 	_major = 0;