message: kill primerCSSModules (since we're using the custom build)
diff: @@ -9,13 +9,12 @@ export default class MyDocument extends Document {
  const styles = sheet.getStyleElement()
  return {
  ...page,
  - styles,
  - primerCSSModules: ['buttons', 'forms', 'navigation', 'product', 'tooltips', 'utilities']
  + styles
  }
  }
  render() {
  - const {styles, primerCSSModules} = this.props
  + const {styles} = this.props
  return (
  <html lang="en">
  @@ -28,10 +27,6 @@ export default class MyDocument extends Document {
  <meta name="og:title" content="Primer React" />
  <meta name="description" content="Primer components built with React.js." />
  <link rel="stylesheet" href="/dist/css/build.css" />
  - {primerCSSModules &&
  - primerCSSModules.map(name => (
  - <link rel="stylesheet" href={`https://unpkg.com/primer-${name}/build/build.css`} key={name} />
  - ))}
  {styles}
  </Head>
  <body>
  