I had a couple of games on my old PC, and now switched to another one. Now, despite having only 4 games installed, the entry on the panel (aka Linux menu bar)(that thing with all games, the 5 major categories in Steam, etc) is spammed with 20 games or so. How do I remove them? I've heard of a way of doing it via the library, but they're not in the library. What to do now? Thanks!