MGM Resorts International said Tuesday (April 21) it finished the sale of the operating business at MGM Northfield Park, wrapping up a $546 million all-cash transaction that hands control of the Ohio property to funds managed by Clairvest Group Inc. The company announced the closing from Las Vegas and framed the move as another step in reshaping its holdings while unlocking money for other priorities. The sale had been expected and now formally removes the racino from MGM’s operating lineup. Executives said the Northfield Park property had become a leading venue in its region and credited employees for sustaining performance in a competitive market.…