Delete a template.
cURL
curl --request DELETE \ --url https://api.unosend.co/templates/{id} \ --header 'Authorization: Bearer <token>'
curl -X DELETE https://api.unosend.co/templates/tpl_abc123 \ -H "Authorization: Bearer un_xxxxxxxxxx"
{ "success": true, "data": { "id": "tpl_abc123" } }