Steam has always been a fickle program about letting you actually remove things you don't want from your games library in the app. It would appear however, that certain options have been implemented and recently discovered that will allow you to clear the clutter away from your Steam libraries at long last.
The solution was discovered and posted in aby user "Enter the Dragon Punch". Reportedly, users need to log into the , click the Games, Software, etc. option, pick from the list or search for the game that you want to remove from your account, select I want to permanently remove this game from my account, and finally select Ok, remove the listed games from my account permanently as shown in my screens below.
As you can see, there are a few things about this process to consider. Once you get rid of a game by this method, you can't go back on it. No redownloading if you change your mind. You'll have to buy the item again. Secondly, it doesn't remove local content from your system. You'll still have to do that yourself, so be sure that if you want to really get rid of something, don't forget to delete local content via your usual method.
There's plenty of reasons to keep the license to a game even if you end up not wanting to play it now. Definitely we change our minds as time goes along, but it's nice to finally have an option that doesn't involve interacting with Valve Support over phone or email as it did before to remove a game. After all, there are just a few games that are just plain unredeemable. Looking at you,.