MONTREAL – Bell Canada’s sassy buck-toothed duo, Frank and Gordon the beavers, may have been euthanized this week, but they sure worked hard the last quarter.Bell Canada Enterprises (which is still a public company for a bit longer) reported its second quarter results today and had its best wireless quarter in two and a half years. And, it is dumping its beavers in favor of a new marketing campaign which is set to take flight during the Olympics, which begin this weekend.Bell Mobility’s net adds were up 32%, its best postpaid gain since Q4 2005. Total additions in the quarter...