mm: remove __{add,sub}_zone_page_state()

__add_zone_page_state() and __sub_zone_page_state() are unused.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/vmstat.h

@@ -210,11 +210,6 @@ extern void zone_statistics(struct zone *, struct zone *);
 
 #endif /* CONFIG_NUMA */
 
-#define __add_zone_page_state(__z, __i, __d)	\
-		__mod_zone_page_state(__z, __i, __d)
-#define __sub_zone_page_state(__z, __i, __d)	\
-		__mod_zone_page_state(__z, __i,-(__d))
-
 #define add_zone_page_state(__z, __i, __d) mod_zone_page_state(__z, __i, __d)
 #define sub_zone_page_state(__z, __i, __d) mod_zone_page_state(__z, __i, -(__d))