Deletes a DNS record
You will get a 204 status response on success, and 404 if there is no DNS record with a requested ID or you entered incorrect URL.
curl -i-X DELETE --url <api_url>/dns_zones/:dns_zone_id/records/:record_id -u user:userpass
curl -X DELETE --url <api_url>/dns_zones/:dns_zone_id/record/:record_id.xml -u user:userpass