asus-laptop: remove no longer used keycode_map field

The driver uses sparse keymap library and does not use this field
anymore.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

drivers/platform/x86/asus-laptop.c

@@ -236,7 +236,6 @@ struct asus_laptop {
 	u8 light_level;		/* light sensor level */
 	u8 light_switch;	/* light sensor switch value */
 	u16 event_count[128];	/* count for each event TODO make this better */
-	u16 *keycode_map;
 };
 
 static const struct key_entry asus_keymap[] = {