Remove add_notifications.sh

No longer necessary

install/upgrade/add_notifications.sh

@@ -1,5 +0,0 @@
-#!/bin/bash
-# Add notifications
-
-rm -f /usr/local/hestia/data/users/admin/notifications.conf
-/usr/local/hestia/bin/v-add-user-notification admin "HestiaCP Beta Test"