ffho-upgrade-tools: remove 999-remove-sysupgrade-currentsite

this should be long enough in the firmware, to remove all appearances

ffho/ffho-upgrade-tools/files/lib/gluon/upgrade/999-remove-sysupgrade-currentsite

@@ -1,3 +0,0 @@
-#!/bin/sh
-cat /etc/sysupgrade.conf | grep -v /etc/config/currentsite > /tmp/sysupgrade.conf
-mv /tmp/sysupgrade.conf /etc/sysupgrade.conf