code: public void deleteConnector(Long chargingStationTypeId, Long evseId, Long id) {
          ChargingStationType chargingStationType = chargingStationTypeRepository.findOne(chargingStationTypeId);
          Evse evse = getEvseById(chargingStationType, evseId);
  
          Connector connector = getConnectorById(evse, id);
          evse.getConnectors().remove(connector);
  
          chargingStationTypeRepository.createOrUpdate(chargingStationType);
      }
docs: Delete a connector.
  
  @param id the id of the entity to delete.