chore: remove dart source and tooling

test/browser-providers.ts

@@ -52,9 +52,6 @@ const configuration: { [name: string]: ConfigurationInfo } = {
 };
 
 export const customLaunchers: { [name: string]: BrowserLauncherInfo } = {
-  'DartiumWithWebPlatform': {
-    base: 'Dartium',
-    flags: ['--enable-experimental-web-platform-features'] },
   'ChromeNoSandbox': {
     base: 'Chrome',
     flags: ['--no-sandbox'] },

test/protractor.conf.js

@@ -1,11 +1,6 @@
-/**
- * This file is Node ES6 and will not be translated to Dart.
- */
 const path = require('path');
 
-/**
- * Setup TypeScript for our tests.
- */
+/** Setup TypeScript for our tests. */
 require('ts-node/register');
 
 const E2E_BASE_URL = process.env['E2E_BASE_URL'] || 'http://localhost:4200';