lib/Ext/data/NodeInterface.js
function(destroy, suppressEvents) {
                    var parentNode = this.parentNode;

                    if (parentNode) {
                        parentNode.removeChild(this, destroy, suppressEvents, true);
                    }
                    return this;
                }
function(destroy, suppressEvents) {
                    var parentNode = this.parentNode;

                    if (parentNode) {
                        parentNode.removeChild(this, destroy, suppressEvents, true);
                    }
                    return this;
                }
Removes this node from its parent.
@param {Boolean} [destroy=false] `true` to destroy the node upon removal.
@return {Ext.data.NodeInterface} this