Because you have purchased the demo from the store you can no longer delete it from your library, its as if you've purchased a full working copy of the game, if this feature became available some/a lot of people may delete other purchased apps by mistake leading to a whole can of worms for the support staff.
Jimmy, we both know that that's not what Si McClure meant. We want to be able to remove an app from Not Installed. Just like Google Play Store and Apple App Store, we want to ability to completely remove from our account a bad demo or even a embarrassing paid app.
It's specifically annoying for demos you already purchased the full game. Please let me remove the demos from the library when I already have the full version.
Oculus - uninstalling the demos is not enough. I want it out of my library. Every time I go into my not installed tab I do not want to see Demo Versions! Please give us the ability to delete demos from our accounts and library.
The idea is NOT delivered. It is clearly the request to REMOVE items from the Library - not UINSTALLING them. I just can repeat what the others said: uninstalling the demos is not enough. I want the items out of my library!
At least for free games/apps there's absolutely no reason to prevent that.