style: remove empty comments (#23404)

PR Close #23404

packages/platform-browser/src/browser.ts

@@ -44,9 +44,6 @@ export const BROWSER_SANITIZATION_PROVIDERS: StaticProvider[] = [
   {provide: DomSanitizer, useClass: DomSanitizerImpl, deps: [DOCUMENT]},
 ];
 
-/**
- *
- */
 export const platformBrowser: (extraProviders?: StaticProvider[]) => PlatformRef =
     createPlatformFactory(platformCore, 'browser', INTERNAL_BROWSER_PLATFORM_PROVIDERS);
 

packages/platform-browser/src/dom/events/event_manager.ts

@@ -10,15 +10,9 @@ import {Inject, Injectable, InjectionToken, NgZone} from '@angular/core';
 
 import {getDOM} from '../dom_adapter';
 
-/**
- *
- */
 export const EVENT_MANAGER_PLUGINS =
     new InjectionToken<EventManagerPlugin[]>('EventManagerPlugins');
 
-/**
- *
- */
 @Injectable()
 export class EventManager {
   private _plugins: EventManagerPlugin[];

packages/platform-browser/src/version.ts

@@ -13,7 +13,5 @@
  */
 
 import {Version} from '@angular/core';
-/**
- *
- */
+
 export const VERSION = new Version('0.0.0-PLACEHOLDER');