Unpublish your app on the Google Play store 2018
Delete Your App from Google Play
You cannot delete your app from Google Play. Instead, you can unpublish an app and it will no longer appear in the store.
To unpublish your app on the Google Play store:
1. Go to https://market.android.com/publish/Home, and log in to your Google Play account.
2.Click on the application app distribution and pricing option you want to delete.
3.Click Unpublish.
Unpublished: App has been unpublished on Google Play and isn't available to new users. The app is still available on existing users' devices. To publish your app again and make it available on Google Play, click Republish app.