MIAMI — Former Florida Gov. Jeb Bush called on Wednesday for older Americans to pass the political torch to a new generation, saying that it’s up to a new cohort of leaders to change the country’s “toxic political climate.” “As a 70-year-old person, I’m part of the problem,” Bush said at a luncheon at Miami’s Jungle Island hosted by the Greater Miami Chamber of Commerce. “It’s time for my generation to get off the stage politically.” Bush, who served eight years as Florida governor before launching an ill-fated bid for the Republican Party’s 2016 presidential nomination, did not point fingers …