drop listview.js

* isn't used in core and isn't mentioned in documentation

Kill it with fire:

![189fc031df1e2a87](https://cloud.githubusercontent.com/assets/245432/4903404/20f7337a-6440-11e4-9de4-7c27877dec9d.gif)


cc @DeepDiver1975 @LukasReschke 

@icewind1991 You edited it some years ago the last time. Is this fine for you?