NEW YORK — Lawyers for the New York attorney general, Donald Trump and his former top executives said Wednesday they didn’t know anything about the ex-president’s onetime finance chief Allen Weisselberg being in talks to plead guilty to perjury. Responding to a demand for more information from the judge in Trump’s civil fraud trial — who asked them to shed light on a recent New York Times report that Weisselberg is in talks with the Manhattan district attorney’s office to plead guilty to perjuring himself at the trial — both sides said they were out of the loop. “At this time, we are not invol…