Even before the Delaware ice hockey team took the ice Wednesday for its first game in the American Collegiate Hockey Association National Tournament, a theme bad been set. In the first game of the tournament, No. 9 Michigan-Dearborn upset No. 4 Ohio,4-2. Thus, when the No. 2 Hens (24-5-1) prepared to face-off against No. 11 Arizona (2 1-4-l ), overlooking the underdog …