Actor Pamela Hayden, a longtime staple on “The Simpsons,” announced this week that she’s leaving the hit animated series “to pursue other creative outlets.” Veteran “The Simpsons” voice actor Pamela Hayden will bid farewell to Springfield’s Milhouse, Jimbo Jones and all the other characters she helped bring to life for more than three decades. Replying to the show’s post, Hayden …