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

Change-Id: I03461cb9e87b4ddd599e5601637a75b012694e7c
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36047
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/mainboard/hp/z220_sff_workstation/romstage.c

@@ -17,7 +17,6 @@
  */
 
 #include <stdint.h>
-#include <arch/io.h>
 #include <device/pci_ops.h>
 #include <device/pci_def.h>
 #include <superio/nuvoton/npcd378/npcd378.h>

src/mainboard/ibase/mb899/superio_hwm.c

@@ -15,7 +15,6 @@
  */
 
 #include <types.h>
-#include <arch/io.h>
 #include <console/console.h>
 #include <device/device.h>
 #include <pc80/mc146818rtc.h>

src/mainboard/kontron/986lcd-m/mainboard.c

@@ -20,7 +20,6 @@
 #include <console/console.h>
 #include <drivers/intel/gma/int15.h>
 #include <pc80/mc146818rtc.h>
-#include <arch/io.h>
 #include <superio/hwm5_conf.h>
 
 /* Hardware Monitor */

src/mainboard/lenovo/x201/mainboard.c

@@ -18,7 +18,6 @@
 
 #include <console/console.h>
 #include <device/device.h>
-#include <arch/io.h>
 #include <device/pci_ops.h>
 #include <ec/acpi/ec.h>
 #include <northbridge/intel/nehalem/nehalem.h>

src/mainboard/razer/blade_stealth_kbl/romstage.c

@@ -20,7 +20,6 @@
 #include <assert.h>
 #include <soc/romstage.h>
 #include <spd_bin.h>
-#include <arch/io.h>
 #include "spd/spd.h"
 #include <ec/acpi/ec.h>
 #include <stdint.h>