COLUMBUS, Ohio — A court ruling that Cleveland’s so-called “jock tax” violates players’ due process rights could end up costing the city millions in tax refunds.The Ohio Supreme Court last week upheld a ruling that rejected the city’s appeal over its formula for taxing visiting professional athletes.Hunter Hillenmeyer, who was on the Bears’ roster from 2003 to 2010, and Jeff Saturday, who played primarily for the Indianapolis Colts, sued to have Cleveland tax visiting players based …