def channels_voice_greeting_delete(self, id, **kwargs):
        "https://developer.zendesk.com/rest_api/docs/voice-api/greetings#delete-greeting"
        api_path = "/api/v2/channels/voice/greetings/{id}.json"
        api_path = api_path.format(id=id)
        return self.call(api_path, method="DELETE", **kwargs)
https://developer.zendesk.com/rest_api/docs/voice-api/greetings#delete-greeting