Prop Hunt Map Voting

How do you get rid of the map voting that comes with http://steamcommunity.com/sharedfile.../?id=135509255, I have added fretta_voting 0 to the server.cfg file. It still comes up, This is what i want to come up http://steamcommunity.com/sharedfile.../?id=151583504. Put my real goal is to get rid of that the maps that don’t start with ph_.