How many distinct target classes remain in the dataset after filtering out classes with fewer than 30…

How many distinct target classes remain in the dataset after filtering out classes with fewer than 30…: a task in SmolDataEnvs-harbor-train-sandbox: 📊 SmolDataEnvs: Harbor (train) (Harbor dataset). Files (in /home/user/input, no subfolders): - FederalAirMarshalMisconduct.csv