SPRINGFIELD — A federal judge on Monday further delayed the wire fraud and money laundering trial of William “Sam” McCann, a former candidate for Illinois governor, after McCann declared he was “medically and psychologically” unable to proceed and dropped his plan to represent himself.U.S. District Court Judge Colleen Lawless didn’t buy the self-diagnosis of the ex-lawmaker, who was hospitalized last week with chest pains and fainting spells but discharged on Wednesday. But after a …