by Aaron Beard, Associated Press DURHAM, N.C.—North Carolina spoiled the emotional home finale of retiring Hall of Famer Mike Krzyzewski, beating fourth-ranked rival Duke 94-81 on Saturday night at Cameron Indoor Stadium. The day that was all about the coach who has 1,196 career victories and five NCAA championships abruptly turned into a season-defining performance for the Tar Heels, who played fearlessly in an extra rowdy arena and shot 59% after halftime. By the final minutes, the Tar Heels (23-8, 15-5 Atlantic Coast Conference) were stretched the lead to double figures, hitting clinching f…