[PATCH] uml: Fix highmem compilation

Remove a reference to an unused variable.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/kernel/mem.c

@@ -65,9 +65,6 @@ void mem_init(void)
 	unsigned long start;
 
 	max_low_pfn = (high_physmem - uml_physmem) >> PAGE_SHIFT;
-#ifdef CONFIG_HIGHMEM
-	highmem_start_page = phys_page(__pa(high_physmem));
-#endif
 
         /* clear the zero-page */
         memset((void *) empty_zero_page, 0, PAGE_SIZE);