code: func (c *Client) DeleteTunnelConnection(clusterName string, connName string) error {
  	if clusterName == "" {
  		return trace.BadParameter("missing parameter cluster name")
  	}
  	if connName == "" {
  		return trace.BadParameter("missing parameter connection name")
  	}
  	_, err := c.Delete(c.Endpoint("tunnelconnections", clusterName, connName))
  	return trace.Wrap(err)
  }
docs: // DeleteTunnelConnection deletes tunnel connection by name