Harper Lee, the aging author of “To Kill a Mockingbird,” has reached a settlement in principle on a lawsuit alleging she was scammed into signing over the copyright to her classic novel by an unscrupulous literary agent who took advantage of her failing hearing and eyesight, a lawyer in the case says. Lee had filed suit in May against Samuel Pinkus and others — including disgraced journalist Gerald Posner — to reclaim the copyright. However, dismissal papers were filed in Manhattan federal court today by Lee’s lawyer removing both Posner and Lee Ann Winick, Pinkus’ wife and another defendant, of...