League's Account Abandonment Policy: Help?

Hi everyone, Since I am leaving League for the rest of the school year(I waste too much time on it, I even watch Youtube videos about League when I can't play, it's embarrassing), I was wondering what the policy is for account "abandonment". I plan on coming back to my account for the summer, as I adore this game and I've put a little less than 100$ into it, I'd rather not have it deleted. So does anyone know if League deletes accounts after a certain amount of time? I don't care about my "elo" as I don't play Ranked and will probably be a little rusty anyways when I start back up over summer.

Any insight is appreciated, thanks :)