Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/mux.js/lib/mp4/find-box.js

@@ -1,44 +0,0 @@
-var toUnsigned = require('../utils/bin').toUnsigned;
-var parseType = require('./parse-type.js');
-
-var findBox = function(data, path) {
-  var results = [],
-    i, size, type, end, subresults;
-
-  if (!path.length) {
-    // short-circuit the search for empty paths
-    return null;
-  }
-
-  for (i = 0; i < data.byteLength;) {
-    size = toUnsigned(data[i]     << 24 |
-      data[i + 1] << 16 |
-      data[i + 2] <<  8 |
-      data[i + 3]);
-
-    type = parseType(data.subarray(i + 4, i + 8));
-
-    end = size > 1 ? i + size : data.byteLength;
-
-    if (type === path[0]) {
-      if (path.length === 1) {
-        // this is the end of the path and we've found the box we were
-        // looking for
-        results.push(data.subarray(i + 8, end));
-      } else {
-        // recursively search for the next box along the path
-        subresults = findBox(data.subarray(i + 8, end), path.slice(1));
-        if (subresults.length) {
-          results = results.concat(subresults);
-        }
-      }
-    }
-    i = end;
-  }
-
-  // we've finished searching all of data
-  return results;
-};
-
-module.exports = findBox;
-