public void removeWorldFromGroup(String world) {
        String groupName = getWorldGroupName(world);
        if (!groupName.equals(DEFAULT_GROUP_NAME)) {
            list.get(groupName).removeWorld(world);
        }
    }
public void removeWorldFromGroup ( String world ) { String groupName = getWorldGroupName ( world ) ; if ( ! groupName . equals ( DEFAULT_GROUP_NAME ) ) { list . get ( groupName ) . removeWorld ( world ) ; } }
Remove a world from a worldgroup

@param world The world to reset to default