Robert De Niro loses temper in court over questions about treatment of ex-PA as he’s sued for harassment

FILM legend Robert De Niro lost his temper in court yesterday when asked a string of questions about his treatment of a female assistant.The Raging Bull star lost his rag after being accused of calling his former employee while ­urinating, ­calling her a b***h and insisting she scratched his back.GettyRobert De Niro, pictured otuside court, is being sued by his ex-PA for gender ­discrimination and bullying[/caption]GettyGraham Chase Robinson accused De Niro of calling while ­urin