Warner Bros. has decided to not go forward with the J. Blakeson-directed pic “Imitation Game.”The progress-to-production option had expired, and Warners has decided to not move forward. Producers will now go back out to other studios. Graham Moore penned the work, based on the true story of English mathematician and logician Alan Turing, who helped crack the Enigma code during World War II. Nora Grossman and Ido Ostrowsky will produce. Warners chased the film hard after the script topped last year’s Black List, paying seven figures for the script to outbid a handful of companies. The plan was to put a big star in the role of Turing in an awards-season play. As for Blakeson, his long-in-development “Bad Blood and Trouble” got a shot of life yesterday when Variety reported that Bradley Cooper was in negotiations to star.