nb/i945: Remove unused include <cpu/cpu.h>

Change-Id: I5dff9b7c157b2aba596e95b5fb18a84f7c4e9365
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35384
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/northbridge/intel/i945/northbridge.c

@@ -21,7 +21,6 @@
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <stdlib.h>
-#include <cpu/cpu.h>
 #include <arch/acpi.h>
 #include <cpu/intel/smm_reloc.h>
 #include "i945.h"