Delete entity type with the given entity type name.

def delete_entity_type(project_id, entity_type_id):
    """Delete entity type with the given entity type name."""
    import dialogflow_v2 as dialogflow
    entity_types_client = dialogflow.EntityTypesClient()

    entity_type_path = entity_types_client.entity_type_path(
        project_id, entity_type_id)

    entity_types_client.delete_entity_type(entity_type_path)