Since its release in 2004, Edgar Wright’s “Shaun of the Dead” has grown to become one of the century’s most beloved comedy films. But as popular a touchstone as the film remains, co-writer and star Simon Pegg has made it clear that a sequel to the zombie rom-com isn’t on his to-do list in the future. “If I ever do an Instagram Live or whatever, people are always like, ‘I need ‘Shaun of the Dead 2’ in my life,’” Pegg said in a recent interview with The Guardian.