By Daniel Kline The casino giant has made it clear its wants to sell-off one of its Las Vegas Strip Casinos. Which one will it be? Caesars Entertainment (CZR) – Get Caesars Entertainment Inc Report and MGM Resorts International (MGM) – Get MGM Resorts International Report fight for domination over the south and central Las Vegas Strip. Both companies have made recent moves to one-up the other, with the most notable being MGM essentially — though not literally — trading the Mirage for the sleeker, more modern Cosmopolitan. That was a bold move that the company thinks improves its Las Vegas port…