Biz Journals – Mark Pincus, founder of Zynga, the once-super fast growing gaming company, is leaving his operational role as chief product officer, but will stay on as as chairman of the board. Zynga also named a raft of new top executives. The announcement is part of the founder’s shift away from day-to-day management of the gaming company. Pincus remained chief product officer when he relinquished the CEO role to former Microsoft and Electronic Arts executive Don Mattrick. Pincus recruited Mattrick to the position last July. Mattrick relayed Pincus’ decision in an email to employees, which was disclosed as the company announced quarterly revenue of $168 million, a 36 percent…