删除jquery promise listener

Question

我使用jQuery.Deferred并承诺在我的JS类中监听更新。 当我不再需要时，如何删除进度处理程序。

//some place in the code:

var $deferred = $.Deferred()
    $promise = $deferred.promise();

/// them sometimes:
$promise.notify('use requests action');

// somewhere else:
$promise.progress(progessHandler);

function progessHandler(msg){
   console.log(msg);
}

// then later
// how do I unsubscribe from the progress update?
$promise.?????(progessHandler);

非常感谢任何帮助。