arch/io.h: Drop unnecessary include

Change-Id: I91158452680586ac676ea11c8589062880a31f91
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31692
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/lib/edid.c

@@ -31,7 +31,6 @@
 #include <assert.h>
 #include <stddef.h>
 #include <console/console.h>
-#include <arch/io.h>
 #include <stdint.h>
 #include <string.h>
 #include <stdlib.h>