Remove image classes, cause they're built in now

partials/card.hbs

@@ -2,7 +2,7 @@
 Re-usable card for linking to posts
 --}}
 
-<article class="gh-card {{post_class}} {{#if feature_image}}with-image{{else}}no-image{{/if}}">
+<article class="gh-card {{post_class}}">
     <a class="gh-card-link" href="{{url}}">
         {{#if feature_image}}
             <img class="gh-card-image"
@@ -22,4 +22,4 @@ Re-usable card for linking to posts
             <strong>Read more</strong>
         </div>
     </a>
-</article>
+</article>