avr32: Remove two unused #defines from mm/init.c

Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

arch/avr32/mm/init.c

@@ -34,9 +34,6 @@ struct page *empty_zero_page;
  */
 unsigned long mmu_context_cache = NO_CONTEXT;
 
-#define START_PFN	(NODE_DATA(0)->bdata->node_boot_start >> PAGE_SHIFT)
-#define MAX_LOW_PFN	(NODE_DATA(0)->bdata->node_low_pfn)
-
 void show_mem(void)
 {
 	int total = 0, reserved = 0, cached = 0;