MILAN (Reuters) – AC Milan trimmed its annual loss last year thanks to rising commercial revenue and continued cost discipline, the Italian soccer champions said on Wednesday, as it eyes the renewal of a long-standing sponsorship deal with airline Emirates. Recently bought by investment firm RedBird Capital Partners in a 1.2 billion euro ($1.2 billion) deal, AC Milan slashed its net loss by more than 30% to 66 million euros in the 12 months through June. Total revenue rose by 14% to 298 million euros, driven by an increase in match day turnover and commercial and sponsorship deals. “We are in …