code: function(id) {
        var elem = this.getLabel(id);
        if(elem && elem.parentNode) {
          elem.parentNode.removeChild(elem);
        }
      }
docs: /*
  Method: disposeLabel
  
  Removes a label.
  
  Parameters:
  
  id - (string) A label id (which generally is also a <Graph.Node> id).
  
  Example:
  (start code js)
  var viz = new $jit.Viz(options);
  viz.labels.disposeLabel('labelid');
  (end code)