Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/browserslist/browser.js

@@ -1,46 +0,0 @@
-var BrowserslistError = require('./error')
-
-function noop () { }
-
-module.exports = {
-  loadQueries: function loadQueries () {
-    throw new BrowserslistError(
-      'Sharable configs are not supported in client-side build of Browserslist')
-  },
-
-  getStat: function getStat (opts) {
-    return opts.stats
-  },
-
-  loadConfig: function loadConfig (opts) {
-    if (opts.config) {
-      throw new BrowserslistError(
-        'Browserslist config are not supported in client-side build')
-    }
-  },
-
-  loadCountry: function loadCountry () {
-    throw new BrowserslistError(
-      'Country statistics are not supported ' +
-      'in client-side build of Browserslist')
-  },
-
-  loadFeature: function loadFeature () {
-    throw new BrowserslistError(
-      'Supports queries are not available in client-side build of Browserslist')
-  },
-
-  currentNode: function currentNode (resolve, context) {
-    return resolve(['maintained node versions'], context)[0]
-  },
-
-  parseConfig: noop,
-
-  readConfig: noop,
-
-  findConfig: noop,
-
-  clearCaches: noop,
-
-  oldDataWarning: noop
-}