code: func (c *Client) DeleteNode(namespace string, name string) error {
  	if namespace == "" {
  		return trace.BadParameter("missing parameter namespace")
  	}
  	if name == "" {
  		return trace.BadParameter("missing parameter name")
  	}
  	_, err := c.Delete(c.Endpoint("namespaces", namespace, "nodes", name))
  	if err != nil {
  		return trace.Wrap(err)
  	}
  	return nil
  }
docs: // DeleteNode deletes node in the namespace by name