If you uninstall them they are uninstalled. Them being in your library does not mean they are installed on your computer, it means they are on your account. If they are on your account but not installed on your computer they use up 0 space and are of no detriment to you whatsoever.
I can't fathom a legitimate reason why you would absolutely need something removed from your account ... unless you wanted to hide the fact you bought something from a spouse or loved one lol.
In your library, click on filters and uncheck the box for "Uninstalled Apps". Now they won't show anymore.
Yeah I skimmed it after I posted my response.
Anything that you download on your oculus account is permanently on your account. There is absolutely nothing that you can do.
But it's 2018?
I cannot believe there is no way to remove stuff from your account you are never going to play again.
Irrelevant. That’s just the way it works and you’re going to have to except that.