Update for Sneasel ban

As per http://www.smogon.com/forums/threads/sneasel-has-been-banned.3493202/page-5#post-5011892, Sneasel is now banned in LC (LC (beta) being the official Little Cup metagame for XY).
Merge pull request #485 from MaikeruS/patch-2

Update for Sneasel ban