A U.S. judge dismissed a lawsuit accusing Amazon.com of defrauding shareholders about its treatment of third-party sellers and plans to expand capacity, culminating in a Federal Trade Commission antitrust case against the online retail giant. Monday's dismissal by U.S. District Judge John Chun in Seattle was with prejudice, meaning the proposed class action cannot be brought again. Lawyers for the shareholders did not immediately respond to requests for comment. Shareholders accused Amazon of