[GFS2] Tidy up locking code

As per Jan Engelhardt's second email, this removes some unused code,
and fixes up indenting in various places.

Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/main.c

@@ -65,8 +65,6 @@ static int __init init_gfs2_fs(void)
 {
 	int error;
 
-	gfs2_init_lmh();
-
 	error = gfs2_sys_init();
 	if (error)
 		return error;