どうやら、やっとGAEに登録したアプリを削除する機能が提供されたようです。 Delete an App - Our developers have been quite vocal with their desire to delete an App Engine application once it is no longer used (It's one of the top 5 most requested features on our issue tracker). Well, this feature is now available via the Admin Console! Just visit the Application Settings page for more information. Please be careful when deleting an ap