[XTENSA] Remove duplicate includes.

Signed-off-by: Lucas Woods <woodzy@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Christian Zankel <chris@zankel.net>

arch/xtensa/mm/cache.c

@@ -25,7 +25,6 @@
 #include <linux/swap.h>
 #include <linux/pagemap.h>
 
-#include <asm/pgtable.h>
 #include <asm/bootparam.h>
 #include <asm/mmu_context.h>
 #include <asm/tlb.h>