Construction company CNY is trying to recover $21.6 million for unpaid work at Maefield Development’s multi-billion-dollar hotel and retail project known as 20 Times Square. The company, which was the construction manager for the $2.4 billion mixed-use project at 701 Seventh Avenue, filed a petition in New York County Supreme Court last week against an entity controlled by the Witkoff Group — one of the project’s original partners, which was bought out by Maefield in