GFS2: Rationalise header files

Move the contents of some headers which contained very
little into more sensible places, and remove the original
header files. This should make it easier to find things.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

fs/gfs2/ops_inode.c

@@ -32,12 +32,11 @@
 #include "glock.h"
 #include "inode.h"
 #include "meta_io.h"
-#include "ops_dentry.h"
-#include "ops_inode.h"
 #include "quota.h"
 #include "rgrp.h"
 #include "trans.h"
 #include "util.h"
+#include "super.h"
 
 /**
  * gfs2_create - Create a file