[GFS2] Remove page.[ch]

The remaining routines in page.c were all only used in one other
file, so they are now moved into the files where they are referenced
and made static. Thus page.[ch] are no longer required.

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

fs/gfs2/ops_vm.c

@@ -23,7 +23,6 @@
 #include "glock.h"
 #include "inode.h"
 #include "ops_vm.h"
-#include "page.h"
 #include "quota.h"
 #include "rgrp.h"
 #include "trans.h"