removed commented out CSS

app/assets/javascripts/lib/utils/sticky.js

@@ -9,7 +9,7 @@ export const isSticky = (el, scrollY, stickyTop, insertPlaceholder) => {
   const top = Math.floor(el.offsetTop - scrollY);
   if (top <= stickyTop && !el.classList.contains('is-stuck')) {
-    const placeholder = insertPlaceholder ? createPlaceholder(el) : null;
+    const placeholder = insertPlaceholder ? createPlaceholder() : null;
     const heightBefore = el.offsetHeight;
     el.classList.add('is-stuck');

app/assets/stylesheets/pages/diff.scss

@@ -600,11 +600,6 @@
       .inline-parallel-buttons {
         display: none;
       }
-
-      + .files,
-      + .alert {
-        // margin-top: 32px;
-      }
     }
   }
 }