How Do I Delete Apple TV Apps?
You can delete apps from the 4th generation Apple TV. It's only possible to hide apps on the 2nd and 3rd generation.
To delete apps on the Apple TV, highlight the app with the Siri Remote and then hold down on the touch surface. Eventually the app will start to jiggle. Press the Play/Pause button to delete it. The process to hide apps on the older Apple TV models is the same, except instead of using the touch surface of a Siri Remote, you hold down the Select button on the Remote until the app jiggles and again push Play/Pause to hide.