'Deletes a DNS server from a deployment.
service_name:
The name of the service.
deployment_name:
The name of the deployment.
dns_server_name:
Name of the DNS server that you want to delete.'

def delete_dns_server(self, service_name, deployment_name, dns_server_name):

    _validate_not_none('service_name', service_name)
    _validate_not_none('deployment_name', deployment_name)
    _validate_not_none('dns_server_name', dns_server_name)
    return self._perform_delete(self._get_dns_server_path(service_name, deployment_name, dns_server_name), async=True)
