Dish Network co-founder Charlie Ergen is stepping down from his role as CEO, a move that will see him segue to focus on the company’s growing wireless business. He will remain chairman, and Dish has upped president and chief operating officer Erik Carlson to president and CEO. Carlson, who has been at Dish since 1995, will continue to report to Ergen. “With more than 20 years’ experience at Dish, Erik brings a complete understanding of the business opportunities both Dish…