refactor: remove karma-js.conf.js

Removes the karma-js.conf.js file and its reference in BUILD.bazel.

BUILD.bazel

@@ -7,7 +7,6 @@ package(default_visibility = ["//visibility:public"])
 
 exports_files([
     "LICENSE",
-    "karma-js.conf.js",
     "package.json",
 ])
 

karma-js.conf.js

@@ -1,92 +0,0 @@
-/**
- * @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.dev/license
- */
-
-const browserProvidersConf = require('./browser-providers.conf');
-const {hostname} = require('os');
-
-const seed = process.env.JASMINE_RANDOM_SEED || String(Math.random()).slice(-5);
-console.info(`Jasmine random seed: ${seed}`);
-
-const isBazel = !!process.env.TEST_TARGET;
-
-module.exports = function (config) {
-  const conf = {
-    frameworks: ['jasmine'],
-
-    client: {
-      jasmine: {
-        random: true,
-        seed,
-      },
-      captureConsole: true,
-    },
-
-    files: [
-      // Serve AngularJS for `ngUpgrade` testing.
-      {pattern: 'node_modules/angular-1.5/angular?(.min).js', included: false, watched: false},
-      {pattern: 'node_modules/angular-mocks-1.5/angular-mocks.js', included: false, watched: false},
-      {pattern: 'node_modules/angular-1.6/angular?(.min).js', included: false, watched: false},
-      {pattern: 'node_modules/angular-mocks-1.6/angular-mocks.js', included: false, watched: false},
-      {pattern: 'node_modules/angular-1.7/angular?(.min).js', included: false, watched: false},
-      {pattern: 'node_modules/angular-mocks-1.7/angular-mocks.js', included: false, watched: false},
-      {pattern: 'node_modules/angular-1.8/angular?(.min).js', included: false, watched: false},
-      {pattern: 'node_modules/angular-mocks-1.8/angular-mocks.js', included: false, watched: false},
-
-      // Static test assets.
-      {pattern: 'packages/platform-browser/test/static_assets/**/*', included: false},
-      {pattern: 'packages/platform-browser/test/browser/static_assets/**/*', included: false},
-
-      'node_modules/reflect-metadata/Reflect.js',
-
-      'dist/legacy-test-bundle.spec.js',
-    ],
-
-    customLaunchers: browserProvidersConf.customLaunchers,
-
-    plugins: ['karma-jasmine', 'karma-chrome-launcher', 'karma-sourcemap-loader'],
-
-    preprocessors: {
-      '**/*.js': ['sourcemap'],
-    },
-
-    // Bazel inter-op: Allow tests to request resources from either
-    //   /base/node_modules/path/to/thing
-    // or
-    //   /base/_main/node_modules/path/to/thing
-    // This can be removed when all karma tests are run under Bazel, then we
-    // don't need this entire config file.
-    proxies: {
-      '/base/angular/': '/base/',
-      '/base/npm/': '/base/',
-    },
-
-    // Always use `polling` for increased communication stability.
-    transports: ['polling'],
-
-    port: 9876,
-    captureTimeout: 180000,
-    browserDisconnectTimeout: 180000,
-    browserDisconnectTolerance: 3,
-    browserNoActivityTimeout: 300000,
-  };
-
-  // Workaround for: https://github.com/bazelbuild/rules_nodejs/issues/1431. The idea is
-  // that we do no not allow `@bazel/karma` to add the `progress` reporter.
-  Object.defineProperty(conf, 'reporters', {
-    enumerable: true,
-    get: () => ['dots'],
-    set: () => {},
-  });
-
-  conf.hostname = hostname();
-
-  // Run the test locally
-  conf.browsers = [process.env['DISPLAY'] ? 'Chrome' : 'ChromeHeadless'];
-
-  config.set(conf);
-};