{src,util}: Remove duplicated includes

Change-Id: Id09cec6b2aae58b131b208e96fec539d068ff68a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32566
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/northbridge/intel/sandybridge/raminit_common.c

@@ -23,7 +23,7 @@
 #include <northbridge/intel/sandybridge/chip.h>
 #include <device/pci_def.h>
 #include <delay.h>
-#include <arch/cpu.h>
+
 #include "raminit_native.h"
 #include "raminit_common.h"
 #include "sandybridge.h"