How do I delete my app from Google Play? – developersmap
You can unpublish an app, when you do, it will no longer appear in the store.
To unpublish your app on the Google Play store:
Go to https://market.android.com/publish/Home, and log in to your Google Play account.
Click on the application you want to delete.
Click on the Store Presence menu, and click the “Pricing and Distribution” item.