Apple has released Apple TV software update 6.1 today, which alongside some security fixes allows you to easily hide applications from the main menu.

From the main menu, simply press and hold the select button on your remote and then press the play/pause button with the unwanted application selected. You’ll be given a dialog box with the option to hide the app.

If you’d like to unhide the app later, you can do so by navigating to the Main Menu section within Settings.