extension - remove local extension files, we use extensionizer

app/scripts/lib/extension-instance.js

@@ -1,68 +0,0 @@
-const apis = [
-  'alarms',
-  'bookmarks',
-  'browserAction',
-  'commands',
-  'contextMenus',
-  'cookies',
-  'downloads',
-  'events',
-  'extension',
-  'extensionTypes',
-  'history',
-  'i18n',
-  'idle',
-  'notifications',
-  'pageAction',
-  'runtime',
-  'storage',
-  'tabs',
-  'webNavigation',
-  'webRequest',
-  'windows',
-]
-
-function Extension () {
-  const _this = this
-
-  apis.forEach(function (api) {
-
-    _this[api] = null
-
-    try {
-      if (chrome[api]) {
-        _this[api] = chrome[api]
-      }
-    } catch (e) {}
-
-    try {
-      if (window[api]) {
-        _this[api] = window[api]
-      }
-    } catch (e) {}
-
-    try {
-      if (browser[api]) {
-        _this[api] = browser[api]
-      }
-    } catch (e) {}
-    try {
-      _this.api = browser.extension[api]
-    } catch (e) {}
-  })
-
-  try {
-    if (browser && browser.runtime) {
-      this.runtime = browser.runtime
-    }
-  } catch (e) {}
-
-  try {
-    if (browser && browser.browserAction) {
-      this.browserAction = browser.browserAction
-    }
-  } catch (e) {}
-
-}
-
-module.exports = Extension

app/scripts/lib/extension.js

@@ -1,17 +0,0 @@
-/* Extension.js
- *
- * A module for unifying browser differences in the WebExtension API.
- *
- * Initially implemented because Chrome hides all of their WebExtension API
- * behind a global `chrome` variable, but we'd like to start grooming
- * the code-base for cross-browser extension support.
- *
- * You can read more about the WebExtension API here:
- * https://developer.mozilla.org/en-US/Add-ons/WebExtensions
- */
-
-const Extension = require('./extension-instance')
-const instance = new Extension()
-window.METAMASK_EXTENSION = instance
-module.exports = instance
-