Remove mention of build tools

They are not included in npm.

site/index.html

@@ -37,7 +37,7 @@ layout: home
         <p class="lead font-weight-normal">
           Install Bootstrap’s source Sass and JavaScript files via npm, Composer, or Meteor.
         </p>
-        <p>Package managed installs don’t include documentation, but do include our build system and readme. You can also <a href="https://github.com/twbs/bootstrap-npm-starter">use our npm template repo</a> to quickly generate a Bootstrap project via npm.</p>
+        <p>Package managed installs don’t include documentation or our full build scripts. You can also <a href="https://github.com/twbs/bootstrap-npm-starter">use our npm template repo</a> to quickly generate a Bootstrap project via npm.</p>
         <a class="btn btn-lg btn-outline-primary mb-3" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/download/">Read installation docs</a>
       </div>
       <div class="col-md-7 pl-md-5">