Some Android apps require that you sign-in using your Google account (access your private data, Google + circles, contact list, email address,...). If you no longer use these apps, here's how to unlink them from your Google+ profile.
Android - How to unlink apps from your Google Plus account
Open Google+ app and tap on the
Menu key >
Settings. Scroll to
Account settings and select your account:
Tap on
Apps with Google+ Sign-In:
Select an app and tap on
Disconnect:
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