Hedge fund manager John Paulson is leaving the board of American International Group Inc., the Financial Times reported Wednesday. A spokesman for New York-based Paulson & Co., which Mr. Paulson founded in 1994, declined to comment.  Mr. Paulson had been part of a revolt against CEO Peter Hancock, who agreed to step down last month on the heels of a $3 billion quarterly loss. Mr. Paulson and activist investor Carl Icahn had been pushing for change at AIG since 2015.