David Koepp has confirmed he’s no longer attached to the latest Indiana Jones sequel.The screenwriter wrote an early draft of the script, which persuaded Harrison Ford to sign on for a fifth and final film, but he has since departed the project, suggesting he walked away when Steven Spielberg was replaced as director by James Mangold.“James deserves a chance to take his shot at it,” Koepp told Collider. “I’ve done several versions with Steven.