Appearing on MSNBC’s “The Weekend,” former federal prosecutor Glenn Kirschner bashed U.S. District Court for the Southern District of Florida Judge Aileen Cannon for wasting time by considering frivolous motions as she drags her feet on Donald Trump’s obstruction of justice trial. He then suggested she is desperately looking for a wayto shut the case down. Speaking with hosts about the Mar-a-Lago case brought by special counsel Jack Smith against the former president, Kirschner claimed that Cannon was stockpiling — and not resolving— motions from Trump’s legal team like a “like a beaver buildi…