Changed GSI route to standard in staging
Changed GSI route to standard in staging

The GSI SMTP route in staging settings doesn't need to use GSI servers
for staging data, it has been changed to use the same SMTP service as
all the other outbound mail.

ministryofjustice/manchester_traffic_offences_pleas,ministryofjustice/manchester_traffic_offences_pleas,ministryofjustice/manchester_traffic_offences_pleas,ministryofjustice/manchester_traffic_offences_pleas