Aoki Lee Simmons, 21, and Vittorio Assaf, 65, were said to be “100% done” after their brief whirlwind romance raised eyebrows last week, RadarOnline.com has learned. In a sudden development to come after Aoki and Assaf were caught packing on the PDA during a recent trip to St. Barts, sources close to the 21-year-old confirmed that the pair were no longer an item. “It’s 100% done,” one insider close to Aoki told Page Six on Monday. “They’re absolutely not dating.” Aoki herself apparently dismissed the dating rumors about her and the wealthy restauranteur who is 44 years her senior. “Of course I…