api_keys.go
func (client *Client) DeleteAPIKey(key string) error {
	return client.doJsonRequest("DELETE", fmt.Sprintf("/v1/api_key/%s", key), nil, nil)
}
func (client *Client) DeleteAPIKey(key string) error {
	return client.doJsonRequest("DELETE", fmt.Sprintf("/v1/api_key/%s", key), nil, nil)
}
// DeleteAPIKey deletes API key given by key, returns an error