src: Remove unused include <halt.h>

Change-Id: I2f142cc80692e60eb0f81f57339a247f6ef4a524
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32611
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/mainboard/getac/p470/romstage.c

@@ -25,7 +25,6 @@
 #include <console/console.h>
 #include <cpu/x86/bist.h>
 #include <cpu/intel/romstage.h>
-#include <halt.h>
 #include <northbridge/intel/i945/i945.h>
 #include <northbridge/intel/i945/raminit.h>
 #include <southbridge/intel/i82801gx/i82801gx.h>