src: Remove unneeded include <lib.h>

Change-Id: I801849fb31fe6958e3d9510da50e2e2dd351a98d
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29304
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/northbridge/intel/x4x/raminit.c

@@ -22,7 +22,6 @@
 #include <arch/cpu.h>
 #include <delay.h>
 #include <halt.h>
-#include <lib.h>
 #include "iomap.h"
 #if IS_ENABLED(CONFIG_SOUTHBRIDGE_INTEL_I82801GX)
 #include <southbridge/intel/i82801gx/i82801gx.h> /* smbus_read_byte */