Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/regenerator-runtime/path.js

@@ -1,11 +0,0 @@
-/**
- * Copyright (c) 2014-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-exports.path = require("path").join(
-  __dirname,
-  "runtime.js"
-);