chore: nix resolve alias for primer/index.scss

lib/config.js

@@ -1,6 +1,5 @@
 /* eslint-disable no-console */
 const sync = require('./sync')
-const cssLoaderConfig = require('@zeit/next-css/css-loader-config')
 const {CI, NODE_ENV, NOW_URL} = process.env
 
 module.exports = (nextConfig = {}) => {
@@ -31,22 +30,6 @@ module.exports = (nextConfig = {}) => {
         sync({watch: !CI})
       }
 
-      // in production, we don't need to compile Primer from SCSS; just inline
-      // the CSS build!
-      if (!dev) {
-        config.resolve.alias['primer/index.scss$'] = require.resolve('primer/build/build.css')
-
-        const cssLoader = cssLoaderConfig(config, {
-          dev,
-          isServer
-        })
-        options.defaultLoaders.css = cssLoader
-        config.module.rules.push({
-          test: /\.css$/,
-          loader: cssLoader
-        })
-      }
-
       config.module.rules.push({
         test: /\.svg$/,
         use: '@svgr/webpack'