code: func delete(db keyval.ProtoBroker, name string) {
  	key := phonebook.EtcdContactPath(&phonebook.Contact{Name: name})
  
  	// Remove the key.
  	db.Delete(key)
  	fmt.Println("Removing ", key)
  }
docs: // delete demonstrates the use of Delete() API to remove contact with a given
  // name.