Whenever you add a new Windows App, it will be placed at the start screen and a new tile will be created however if you would like to remove tiles from Windows 8.1 you should follow this tutorial.
You will notice that the tile removed (Games) is no longer in the start screen. Please note that this does not actually uninstall the application and the files will remain in your computer. If you wish to access the removed tile, just head to the Apps menu.
To access the Apps menu, just right click on the start screen and select the “All apps option.”