Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/mux.js/lib/mp4/index.js

@@ -1,14 +0,0 @@
-/**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-module.exports = {
-  generator: require('./mp4-generator'),
-  probe: require('./probe'),
-  Transmuxer: require('./transmuxer').Transmuxer,
-  AudioSegmentStream: require('./transmuxer').AudioSegmentStream,
-  VideoSegmentStream: require('./transmuxer').VideoSegmentStream,
-  CaptionParser: require('./caption-parser')
-};