ORLANDO, Fla. — Joel Greenberg — Seminole County’s former tax collector who pleaded guilty to sex trafficking and other federal crimes more than a year ago — is scheduled for a sentencing hearing on Dec. 1, according to federal judge’s order signed Friday. Greenberg, who has been incarcerated at the Orange County Jail since March 2021, faces a mandatory minimum sentence of 12 years in federal prison. The December sentencing hearing is scheduled to start at 9:30 a.m. before U.S. District Judge Gregory Presnell at the federal courthouse at 401 W. Central Blvd. in downtown Orlando. Greenberg plea…