A federal judge has declined to throw out claims that a male student at the University of Chicago was the target of discrimination and retaliation after he complained he was being sexually harassed.In a written opinion Wednesday, U.S. District Judge Edmond E. Chang did not rule on the merits of the claims that the student — proceeding as “John Doe” — brought under Title IX of the Educational Amendments of 1972.Title IX bars educational institutions that receive federal funds from discriminating …