Failed to execute 'removeEventListener' on 'EventTarget'

this is my code:
```
private _removeAnimation(element: HTMLElement) {
    element.removeEventListener('animationend');
}
```

when I use zone.js@0.8.14 it throw this error
![image](https://user-images.githubusercontent.com/15992591/28451071-d338da9a-6e1d-11e7-82fa-3de8f4cb09de.png)
but when I use zone.js@0.8.5, it works ok.