refactor(@schematics/angular): remove copyright header from universal schematic files

(cherry picked from commit b0f6df2)

Author: brandonroberts

packages/schematics/angular/universal/files/standalone-src/app/app.config.server.ts.template

@@ -1,11 +1,3 @@
-/**
- * @license
- * Copyright Google LLC All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
 import { mergeApplicationConfig, ApplicationConfig } from '@angular/core';
 import { provideServerRendering } from '@angular/platform-server';
 import { appConfig } from './app.config';

packages/schematics/angular/universal/files/standalone-src/main.server.ts.template

@@ -1,11 +1,3 @@
-/**
- * @license
- * Copyright Google LLC All Rights Reserved.
- *
- * Use of this source code is governed by an MIT-style license that can be
- * found in the LICENSE file at https://angular.io/license
- */
-
 import { bootstrapApplication } from '@angular/platform-browser';
 import { AppComponent } from './app/app.component';
 import { config } from './app/app.config.server';