MADISON, Wis. (AP) – The University of Wisconsin System has rescinded a new contract with its broadband provider.  The system provides employees and hardware for WiscNet, a nonprofit organization that provides internet access to system campuses, public schools, public libraries and state agencies.  Republicans have questioned whether the system has been improperly subsidizing WiscNet and have ordered it to end its partnership with the provider.   The system, in turn, began seeking contracts for a new provider. WiscNet won the bid in May.  On Thursday, though, the system said it was pulling out of the contract in light of the potential for appeals and further legislative action.  Tony Evers, the state schools superintendent, says the system’s decision puts WiscNet’s future in doubt and could force remaining members to turn to more expensive providers.