Delete app from App Store

My app store keeps showing that Angry Birds needs an update. When I click update, I get the error message Update Unavailable with this Apple ID.

My Apple ID is the only one used on this computer. Where did this app even come from? I never downloaded it on my computer, only on my iPhone.

How do I delete this app? It is not in Launchpad or the Applications folder.

Please help. It's driving me crazy. Thanks!