Make hero match vagrant and vault's layout, remove graphic

website/source/index.html.erb

@@ -7,7 +7,7 @@ description: |-
 <header>
   <div class="container hero">
     <div class="row">
-      <div class="col-md-6">
+      <div class="class="col-md-offset-3 col-md-6 col-sm-offset-2 col-sm-8"">
         <%= inline_svg "logo-text.svg", height: 120, class: "logo" %>
 
         <h1>
@@ -17,9 +17,6 @@ description: |-
         <a class="button primary" href="/intro/index.html">Get Started</a>
         <a class="button" href="/downloads.html">Download <%= latest_version %></a>
       </div>
-      <div class="col-md-6">
-        <%= inline_svg "hero-image.svg" %>
-      </div>
     </div>
   </div>
 </header>