This weekend, ‘The Deuce’ returns on HBO, but it’s far from the most realistic portrayal of sex work in TV and movies — In the sordid HBO period-drama, The Deuce, streetwalkers rule the night. It’s gritty, greasy, 1970s red-light district NYC. Peepshows flash their horny red signs and marquees advertise “John Waters” and “Hammerhead.” Pimps in lacy blouses with sideburns and bushy moustaches rough up their girls. At all-night diners, cigarettes and cocaine…