MIAMI — The OnlyFans model accused of murdering her boyfriend in Miami won’t be getting out of jail to await trial. A Miami-Dade judge on Thursday ruled that Courtney Clenney must remain behind bars as she awaits trial for the killing of Christian Obumseli on April 3 inside their luxury Edgewater apartment. Clenney, 27, is charged with second-degree murder with a deadly weapon in a case that has attracted worldwide media attention. The judge notified attorneys hours before Thursday morning’s hearing. In court, Clenney — wearing a red jail jumpsuit reserved for high-profile inmates — appeared e…