Remove the collision object from the Manager

def remove_object(collision_object):
        """Remove the collision object from the Manager"""
        global collidable_objects
        if isinstance(collision_object, CollidableObj):
            # print "Collision object of type ", type(collision_object), " removed from the collision manager."
            try:
                collidable_objects.remove(collision_object)
            except:
                print
                "Ragnarok Says: Collision_Object with ID # " + str(
                    collision_object.obj_id) + " could not be found in the Collision Manager. Skipping over..."