OMAHA, Neb. (AP) — Berkshire Hathaway is buying back shares for the first time in nearly two years, and new CEO Greg Abel said he has no immediate plans to sell off Kraft Heinz shares now that the packaged food giant has shelved its plan to split the company into two. Abel appeared on CNBC Thursday — less than a week after releasing his first letter to shareholders after taking over the top job at Berkshire from legendary investor Warren Buffett in January. Berkshire also took the unusual step