code: func (s *Store) DeleteNode(idx uint64, nodeName string) error {
  	tx := s.db.Txn(true)
  	defer tx.Abort()
  
  	// Call the node deletion.
  	if err := s.deleteNodeTxn(tx, idx, nodeName); err != nil {
  		return err
  	}
  
  	tx.Commit()
  	return nil
  }
docs: // DeleteNode is used to delete a given node by its ID.