People who allege Chicago police failed to book them promptly — or at all — after taking them to the department’s Homan Square facility must pursue their Fourth Amendment claims on their own, a federal judge held.In a written opinion, U.S. District Judge Robert M. Dow Jr. declined to certify two so-called “secret arrest” classes in a lawsuit challenging the way police used to operate Homan Square on the city’s West Side.One class would have included anyone who was taken to Homan Square …