avr32: Kill unneeded #include <asm/pgalloc.h> from asm/mmu_context.h

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

include/asm-avr32/mmu_context.h

@@ -13,7 +13,6 @@
 #define __ASM_AVR32_MMU_CONTEXT_H
 
 #include <asm/tlbflush.h>
-#include <asm/pgalloc.h>
 #include <asm/sysreg.h>
 #include <asm-generic/mm_hooks.h>