Warner Bros. Discovery's CNN plans to lay off hundreds of employees Thursday as it refocuses the business around a global digital audience, according to people familiar with the matter.The layoffs come as CNN is rearranging its linear TV lineup and building out digital subscription products. The cuts will help CNN lower production costs and consolidate teams, said the people, who spoke on the condition of anonymity to discuss nonpublic changes.Certain shows that are produced in New York or Washington may move to Atlanta, where production can be done more cheaply, said the people.For the most part, the job cuts won't...