src: Remove unneeded 'include <arch/io.h>'

Change-Id: Ie4293094ad703a2d8b68a8c640bd8d9cece2e6e8
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37983
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/soc/intel/broadwell/finalize.c

@@ -13,7 +13,6 @@
  * GNU General Public License for more details.
  */
 
-#include <arch/io.h>
 #include <bootstate.h>
 #include <console/console.h>
 #include <console/post_codes.h>