Delete template using delete method under your account
http://portal.thundersms.com/api/v2/
Note: Few elements in the endpoint may change from service to service.
{endpoint}sms/templates/{id}
Replace the {id} with the actual id of the template that you would like to delete.
curl --location --globoff --request DELETE '{endpoint}api/v2/sms/templates/{template_id}' \
--form 'name=""' \
--form 'entity_name=""' \
--form 'message=""' \
--form 'entity_id=""'
{
"status": "OK",
"code": 200,
"message": "Deleted Successfully",
"data": []
}