code: def delete_process_work_item_type_rule(self, process_id, wit_ref_name, rule_id):
          
          route_values = {}
          if process_id is not None:
              route_values['processId'] = self._serialize.url('process_id', process_id, 'str')
          if wit_ref_name is not None:
              route_values['witRefName'] = self._serialize.url('wit_ref_name', wit_ref_name, 'str')
          if rule_id is not None:
              route_values['ruleId'] = self._serialize.url('rule_id', rule_id, 'str')
          self._send(http_method='DELETE',
                     location_id='76fe3432-d825-479d-a5f6-983bbb78b4f3',
                     version='5.0-preview.2',
                     route_values=route_values)
docs: DeleteProcessWorkItemTypeRule.
          [Preview API] Removes a rule from the work item type in the process.
          :param str process_id: The ID of the process
          :param str wit_ref_name: The reference name of the work item type
          :param str rule_id: The ID of the rule