remove unnecessary headers from mm/page_alloc.c

[William Lee Irwin III]

page_alloc.c does not use either slab.h or swapctl.h. This removes the
inclusion of those headers from page_alloc.c

Cheers,
Bill

===== mm/page_alloc.c 1.67 vs edited =====
--- 1.67/mm/page_alloc.c	Mon Jun  3 08:25:10 2002
+++ edited/mm/page_alloc.c	Sat Jun 15 11:21:33 2002
@@ -15,11 +15,9 @@
 #include <linux/config.h>
 #include <linux/mm.h>
 #include <linux/swap.h>
-#include <linux/swapctl.h>
 #include <linux/interrupt.h>
 #include <linux/pagemap.h>
 #include <linux/bootmem.h>
-#include <linux/slab.h>
 #include <linux/compiler.h>
 #include <linux/module.h>
 #include <linux/suspend.h>