Even Old King Cole needs a refreshment every once in a while. After watching patrons partake at his namesake bar at the St. Regis New York for the better part of 70 years, the king and his subjects in the establishment’s 30-by-8-foot mural were taken down in 2013 for a cleaning and restoration. The whimsical artwork reclaimed its prominent perch that fall, when the bar reopened as part of a property-wide renovation that has returned the St. Regis to the top of New York’s hotel hierarchy. The midtown landmark, …