[PATCH] remove memclass()

From hch.  Nothing is using the memclass() predicate.

include/linux/mmzone.h

@@ -193,16 +193,6 @@ typedef struct pglist_data {
 extern int numnodes;
 extern struct pglist_data *pgdat_list;
 
-static inline int
-memclass(struct zone *pgzone, struct zone *classzone)
-{
-	if (pgzone->zone_pgdat != classzone->zone_pgdat)
-		return 0;
-	if (pgzone > classzone)
-		return 0;
-	return 1;
-}
-
 void get_zone_counts(unsigned long *active, unsigned long *inactive);
 void build_all_zonelists(void);
 void wakeup_kswapd(struct zone *zone);