remove a game from list

I wanted to join some games that started some time ago, clicked on joining them but didn't like what countries where offered to me so I closed the dialog box. Even if I didn't selected a country I still have them on my list... I moved the to my archive and I was wondering when will they disapear compleatly.
Also, is there any way to rollback my joined game counter? Because I didn't actually joined those games..