Kevin Costner became agitated when “CBS Mornings” host Gayle King pressed him repeatedly on returning for the final half-season of the Paramount series “Yellowstone,” saying he should set aside his “big ego.” CBS and Paramount are owned by the same company, “Paramount Global.” Costner has played rancher and family patriarch John Dutton in the modern-day Western set in Montana since 2018, but announced last week that he wouldn’t be returning to the series. King spent the first half of the approximately 7-minute interview, which aired Thursday, discussing the actor’s new four-part film series “H…
