def delete(uri, body = nil, headers = {})
      request :delete, uri, body: body, headers: headers
    end
def delete(uri, body = nil, headers = {})
      request :delete, uri, body: body, headers: headers
    end
Send a DELETE request.
 @param uri (see #post)
 @param body (see #post)
 @param headers (see #post)
 @return (see #request)