In iTunes, right-click on the App, Select Delete, then Are you sure?,
Select Delete App in this popup:
You'll then get this pop-up below which doesn't really make sense, But just click "Move to the Recycle Bin"
(I think that wording is wrong, "Only files in the Mobile Applications folder will be moved to the Recycle Bin"... Don't they mean only files in the Recycle Bin will be moved to the Recycle Bin?!
The app will also be deleted from any iPad, iPhone, or iPod when synchronizing with iTunes.
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