Joseph Quinn is “nervous” about the new ‘Gladiator’ film. The ‘Stranger Things’ actor plays Emperor Caracalla in Sir Ridley Scott’s upcoming epic historical drama film ‘Gladiator II’ and while he has not yet seen the movie, Joseph revealed it pays homage to the original. He told Variety: “I haven’t seen a cut of it. I’ve seen little moments of footage, and it looks like everything that you could possibly want. It’s paying homage to the first film, but very much making it’s its own thing. There’s some fantastic performances in it. And I’m very much looking forward to people seeing it — if not a…