code: func (b *bruteRanger) Remove(network net.IPNet) (RangerEntry, error) {
  	networks, err := b.getEntriesByVersion(network.IP)
  	if err != nil {
  		return nil, err
  	}
  	key := network.String()
  	if networkToDelete, found := networks[key]; found {
  		delete(networks, key)
  		return networkToDelete, nil
  	}
  	return nil, nil
  }
docs: // Remove removes a RangerEntry identified by given network from ranger.