Detroit Free Press deputy editorial page editor Khalil AlHajal on Friday slammed Donald Trump’s “tired old jokes” on Detroit, MI, writing in an op-ed that the former president’s “off-the-cuff jab” at the Motor City “didn’t land” during a speech at a Detroit Economic Club meeting. Discussing the impacts of a potential Kamala Harris presidency, Trump on Thursday warned warned “our whole country will end up being like Detroit if she’s your president.” “You’re going to have a mess on your hands,” Trump said. READ MORE: NYT’s Maggie Haberman: Why Trump really criticized Detroit while in Detroit Wri…