Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/mux.js/lib/tools/parse-sidx.js

@@ -1,29 +0,0 @@
-var parseSidx = function(data) {
-  var view = new DataView(data.buffer, data.byteOffset, data.byteLength),
-    result = {
-      version: data[0],
-      flags: new Uint8Array(data.subarray(1, 4)),
-      references: [],
-      referenceId: view.getUint32(4),
-      timescale: view.getUint32(8),
-      earliestPresentationTime: view.getUint32(12),
-      firstOffset: view.getUint32(16)
-    },
-    referenceCount = view.getUint16(22),
-    i;
-
-  for (i = 24; referenceCount; i += 12, referenceCount--) {
-    result.references.push({
-      referenceType: (data[i] & 0x80) >>> 7,
-      referencedSize: view.getUint32(i) & 0x7FFFFFFF,
-      subsegmentDuration: view.getUint32(i + 4),
-      startsWithSap: !!(data[i + 8] & 0x80),
-      sapType: (data[i + 8] & 0x70) >>> 4,
-      sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF
-    });
-  }
-
-  return result;
-};
-
-module.exports = parseSidx;