remove email test address

roles/nagios_config/templates/contacts_nagios2.cfg.j2

@@ -9,7 +9,6 @@ define contact{
         host_notifications_enabled      1
         service_notification_commands   notify-service-by-email
         host_notification_commands      notify-host-by-email
-        email                           jupiter.hu@monash.edu
-#        email                           hpc-alerts-warning-l@monash.edu
+        email                           hpc-alerts-warning-l@monash.edu
         }