chore: Clean up unused files, imports, and work on getting end-to-end tests and unit tests running (#2272)

platform/viewer/.webpack/rules/extractStyleChunks.js

@@ -2,19 +2,6 @@ const ExtractCssChunksPlugin = require('extract-css-chunks-webpack-plugin');
 
 function extractStyleChunks(isProdBuild) {
   return [
-    {
-      test: /\.styl$/,
-      use: [
-        {
-          loader: ExtractCssChunksPlugin.loader,
-          options: {
-            hot: !isProdBuild,
-          },
-        },
-        { loader: 'css-loader' },
-        { loader: 'stylus-loader' },
-      ],
-    },
     {
       test: /\.(sa|sc|c)ss$/,
       use: [
@@ -25,8 +12,7 @@ function extractStyleChunks(isProdBuild) {
           },
         },
         'css-loader',
-        'postcss-loader',
-        // 'sass-loader',
+        'postcss-loader'
       ],
     },
   ];