build: remove unused rollup.config.js files (#28646)

Since we build and publish the individual packages
using Bazel and `build.sh` has been removed, we can
safely remove the `rollup.config.js` files which are no
longer needed because the `ng_package` bazel rule
automatically handles the rollup settings and globals.

PR Close #28646

packages/service-worker/cli/rollup-cli.config.js

@@ -1,21 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. 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
- */
-
-const resolve = require('rollup-plugin-node-resolve');
-
-module.exports = {
-  entry: '../../dist/all/@angular/service-worker/cli-custom/main.js',
-  dest: '../../dist/packages-dist/service-worker/ngsw-config-tmp.js',
-  format: 'iife',
-  plugins: [resolve()],
-  external: [
-    'fs',
-    'path',
-    '@angular/service-worker/config',
-  ],
-};

packages/service-worker/config/rollup.config.js

@@ -1,23 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. 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
- */
-
-const resolve = require('rollup-plugin-node-resolve');
-const sourcemaps = require('rollup-plugin-sourcemaps');
-
-const globals = {};
-
-module.exports = {
-  entry: '../../../dist/packages-dist/service-worker/fesm5/config.js',
-  dest: '../../../dist/packages-dist/service-worker/bundles/service-worker-config.umd.js',
-  format: 'umd',
-  exports: 'named',
-  moduleName: 'ng.serviceWorker.config',
-  plugins: [resolve(), sourcemaps()],
-  external: Object.keys(globals),
-  globals: globals
-};

packages/service-worker/rollup.config.js

@@ -1,28 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. 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
- */
-
-const resolve = require('rollup-plugin-node-resolve');
-const sourcemaps = require('rollup-plugin-sourcemaps');
-
-const globals = {
-  '@angular/core': 'ng.core',
-  '@angular/common': 'ng.common',
-  'rxjs': 'rxjs',
-  'rxjs/operators': 'rxjs.operators',
-};
-
-module.exports = {
-  entry: '../../dist/packages-dist/service-worker/fesm5/service-worker.js',
-  dest: '../../dist/packages-dist/service-worker/bundles/service-worker.umd.js',
-  format: 'umd',
-  exports: 'named',
-  moduleName: 'ng.serviceWorker',
-  plugins: [resolve(), sourcemaps()],
-  external: Object.keys(globals),
-  globals: globals
-};

packages/service-worker/worker/rollup-worker.config.js

@@ -1,13 +0,0 @@
-/**
- * @license
- * Copyright Google Inc. 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
- */
-
-export default {
-  entry: '../../dist/all/@angular/service-worker/worker-es2017/main.js',
-  dest: '../../dist/packages-dist/service-worker/ngsw-worker.js',
-  format: 'iife',
-};