SAN DIEGO — Ben Affleck is still Batman. The actor shot down rumors that he would be hanging up his cape for the stand-alone Batman film, even though he recently ceded directing responsibilities. Speaking to a crowd of about 6,500 fans at San Diego Comic-Con, Affleck unequivocally assured the crowd that he is still starring in “The Batman.” On Friday, the trade publication The Hollywood Reporter published a report that Warner Bros.