NEW YORK — The judge at Donald Trump’s Manhattan defamation trial threatened to boot the former president from the courtroom Wednesday for mouthing off about E. Jean Carroll in front of the jury after being warned to keep quiet. “Mr. Trump has the right to be present here. That right can be forfeited, and it can be forfeited if he is disruptive, which is what has been reported to me … and if he disregards court orders,” Manhattan Federal Court Judge Lewis Kaplan said. “Mr. Trump, I hope I don’t have to consider excluding you from the trial,” the judge said. “I understand you’re probably very…