Delete luci-upnp

Stop sys upgrade automatically disabling miniupnpd on first boot after upgrade.
I spent a lot of time tracking this behaviour down which only occurs if you have luci-app-upnp installed.

applications/luci-app-upnp/root/etc/uci-defaults/luci-upnp

@@ -1,9 +0,0 @@
-#!/bin/sh
-
-/etc/init.d/miniupnpd enabled && {
-	/etc/init.d/miniupnpd stop
-	/etc/init.d/miniupnpd disable
-}
-
-rm -f /tmp/luci-indexcache
-exit 0