ARM: Remove DISCONTIGMEM support

Everything should now be using sparsemem rather than discontigmem, so
remove the code supporting discontigmem from ARM.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/poodle.c

@@ -463,7 +463,6 @@ static void __init fixup_poodle(struct machine_desc *desc,
 	sharpsl_save_param();
 	mi->nr_banks=1;
 	mi->bank[0].start = 0xa0000000;
-	mi->bank[0].node = 0;
 	mi->bank[0].size = (32*1024*1024);
 }