microblaze: Use generic show_mem()

Remove arch-specific show_mem() in favor of the generic version.
It is based on powerpc patch.
bda2fa535564ace56a395d5b65c6dc81305401fa

Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/mm/init.c

@@ -193,12 +193,6 @@ void free_initmem(void)
 			(unsigned long)(&__init_end));
 }
 
-/* FIXME from arch/powerpc/mm/mem.c*/
-void show_mem(void)
-{
-	printk(KERN_NOTICE "%s\n", __func__);
-}
-
 void __init mem_init(void)
 {
 	high_memory = (void *)__va(memory_end);