OTTAWA—Federal Conservative Leader Erin O’Toole accused Beijing of using the death penalty for political purposes on Tuesday after a Chinese court upheld the sentence of a Canadian sentenced to death in a drug case. O’Toole also reopened the door to a Canadian boycott of next year’s Winter Olympics in China, warning the Chinese government’s recent actions show Canadians are not safe in the country. “I know how hard our athletes are training for Beijing,” the Conservative leader said during a news conference in Oakville, Ont. “But we are approaching a point where it won’t be safe for Canadians, including Olympic athletes, to travel to China.” O’Toole’s comments came hours after the Higher People’s Court of Liaoning province in the northeast rejected an appeal by Robert Schellenberg, whose 15-year prison term on drug smuggling charges was increased to death in January 2019. That followed the December 2018 arrest of Huawei Technologies …