code: func RemoveExistingChain(name string, table Table) error {
  	c := &ChainInfo{
  		Name:  name,
  		Table: table,
  	}
  	if string(c.Table) == "" {
  		c.Table = Filter
  	}
  	return c.Remove()
  }
docs: // RemoveExistingChain removes existing chain from the table.