To delete a parser template, send this API request to your Zephyr server:
DELETE http(s)://{your-zephyr}/flex/services/rest/latest/parsertemplate/{template-id}
Here --
your-zephyr is an the host name or IP address or host name of your Zephyr instance.
template-id is the id ID of the desired template. You get this id ID when you created a template.
Note: You are not allowed to delete pre Pre-configured templates cannot be deleted.