code: def unregisterSdc(self, sdcObj):
          
          # TODO:
          # Add code that unmap volume if mapped
          self.conn.connection._check_login()
          response = self.conn.connection._do_post("{}/{}{}/{}".format(self.conn.connection._api_url, "instances/Sdc::", sdcObj.id, 'action/removeSdc'))    
          return response
docs: Unregister SDC from MDM/SIO Cluster
          :param sdcObj: ScaleIO SDC object
          :return: POST request response
          :rtype: Requests POST response object