mainboard/starlabs/lite: Remove unused header

Change-Id: I7950c80cbdff2b1ede759681ed17c31c7ae22da8
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91738
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/starlabs/lite/mainboard.c

@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <device/device.h>
-#include <soc/ramstage.h>
 #include <variants.h>
 
 static void init_mainboard(void *chip_info)