A trio of TV cancellations came down last night. Syfy has decided to scrap future seasons of the darkly comedic drama Happy! and the ambitious graphic novel adaptation Deadly Class, while Amazon has cancelled Sneaky Pete after three seasons. The Christopher Meloni-fronted Happy! ended its second season last week and TV Line reports that Universal Content Productions will shop the series elsewhere, with Netflix emerging as a potential new home given the show’s popularity on the streaming service. The series launched in 2017 with a manic visual palette and lead voice role from Patton Oswalt. Deadly Class, meanwhile, …