base-files: disable reset button handling

This conflicts with our reset button usage.

package/base-files/files/etc/rc.button/reset

@@ -1,31 +0,0 @@
-#!/bin/sh
-
-. /lib/functions.sh
-
-OVERLAY="$( grep ' /overlay ' /proc/mounts )"
-
-case "$ACTION" in
-pressed)
-	[ -z "$OVERLAY" ] && return 0
-
-	return 5
-;;
-timeout)
-	. /etc/diag.sh
-	set_state failsafe
-;;
-released)
-	if [ "$SEEN" -lt 1 ]
-	then
-		echo "REBOOT" > /dev/console
-		sync
-		reboot
-	elif [ "$SEEN" -ge 5 -a -n "$OVERLAY" ]
-	then
-		echo "FACTORY RESET" > /dev/console
-		jffs2reset -y && reboot &
-	fi
-;;
-esac
-
-return 0