Well, it's been discovered that Steam now allows you to permanently delete titles. Simply deleting the game from your PC won't rid your Steam account of the offending game's title.

There are multiple reasons that someone would consider deleting their Steam account. If that's you, here's how and some important points to consider.

Click I want to permanently remove this game from my account and follow the onscreen instructions to permanently remove a game from your Steam account.

To actually delete these games, I need to launch Steam. The same is true for other apps with the same large payloads: launch the app and then use internal options to delete.