A former fling of late O.J. Simpson spilled about the night the ex-NFL star was banned from a Las Vegas hotel, RadarOnline.com has learned. “The Juice” reportedly partied with an exotic dancer and guzzled hard liquor before getting booted from a Sin City hot spot. In an interview with the National Enquirer, the exotic dancer revealed that she cozied up to a boozy then-71-year-old Simpson at the STK steakhouse in the Cosmopolitan Hotel in November 2017. “I got to the bar around 10 P.M., and O.J. was there, laughing, dancing, and drinking with two other guys,” Shivonn — a popular dancer who goes…