https://developer.apple.com/library/content/documentation/LanguagesUtilities/Conceptual/iTunesConnect_Guide/Chapters/TransferringAndDeletingApps.html
Deleting an App
If you’ve created an app in iTunes Connect that you no longer need to manage, you can delete it from iTunes Connect.
Apps can’t be deleted if they are part of a Game Center group, in an app bundle, or currently displayed on a store. You’ll want to remove the app from sale or from the group if you want to delete it. See Removing an App from Sale or Removing an App from a Group in Game Center Configuration Guide for iTunes Connect. Apps that have not been approved yet can’t be deleted; instead, reject the app. See Removing a Build from Review. ---- 没有审核过的app不能删除