COPENHAGEN (Reuters) - Icelandic low-cost carrier WOW air, which is in talks with U.S. private equity fund Indigo Partners about a potential investment, said on Thursday it would reduce its fleet to 11 aircraft from twenty and cut 111 jobs.Indigo is managed by Bill Franke, the veteran U.S. low-cost airline investor, and has also made investments in U.S.-based Frontier Airlines, Mexico's Volaris, Chilean carrier JetSmart and Hungary's Wizz ."After a challenging year, WOW air is now restructuring..