CALGARY, Alberta — Garnet Hathaway’s origin story is summed up in a story he was told by Craig Conroy. The Flames general manager was a special assistant during the Flyers forward’s senior year at Brown and went to see him play. But the rugged Maine kid got kicked out for hitting a guy — Hathaway still thinks it was a clean hit, by the way — so Conroy had to come back the next day. It was good that he did because after the season Hathaway was signed to an AHL deal. “I think they saw something in me that made me want to become the player [I could be] even more and just give me a little confiden…