resolved critial dependency warning

webpack/webpack.test.js

@@ -8,7 +8,6 @@ const {
 const ProvidePlugin = require('webpack/lib/ProvidePlugin');
 const DefinePlugin = require('webpack/lib/DefinePlugin');
 const LoaderOptionsPlugin = require('webpack/lib/LoaderOptionsPlugin');
-const ContextReplacementPlugin = require('webpack/lib/ContextReplacementPlugin');
 
 /**
  * Webpack Constants
@@ -242,22 +241,6 @@ module.exports = function (options) {
         }
       }),
 
-      /**
-       * Plugin: ContextReplacementPlugin
-       * Description: Provides context to Angular's use of System.import
-       *
-       * See: https://webpack.github.io/docs/list-of-plugins.html#contextreplacementplugin
-       * See: https://github.com/angular/angular/issues/11580
-       */
-      new ContextReplacementPlugin(
-        // The (\\|\/) piece accounts for path separators in *nix and Windows
-        /angular(\\|\/)core(\\|\/)@angular/,
-        root('src'), // location of your src
-        {
-          // your Angular Async Route paths relative to this root directory
-        }
-      ),
-
       /**
        * Plugin LoaderOptionsPlugin (experimental)
        *