Remove IP from email confirmation as the prod. env cannot get client IP
The production environment runs as a Kubernetes service behind Traefik (configured with Ingress). Traefik is configured to strip the client IP from the request headers, so the IP address is not available to the application (this is outside our control, and how Tardis is configured). This means there's no point in sending the email with the IP address, as it will always be the local pod IP.