No. 1 Notre Dame’s stars played like stars Saturday afternoon. And when that happens, the Irish are tough to beat. One could argue impossible. When they fire on all cylinders like they did Saturday afternoon at Hofstra University in Hempstead, N.Y., the Irish are the best men’s lacrosse team in the country. No. 8 Georgetown found out the hard way. Notre Dame won 16-11 — in a game that was not that close until the Hoyas went on a late 3-0 run after it had already been decided — and eliminated the only team who beat it during the regular season. The defending-champion Irish advanced to the NCAA …