Apple is handing off ad sales for its News app to NBCUniversal, Recode reports. Publishers can still sell their own ads and keep 100 percent of the profit generated, but NBCUniversal will now be selling the remaining ad space. Publishers will get 70 percent of the revenue from those ads sales, just like they’re currently getting under the existing arrangement with Apple. Linda Yaccarino, NBCUniversal’s head of sales, said the company is…