Remove outdated links.

Author: hilary-luo

_includes/templates/footer.liquid

@@ -35,10 +35,7 @@
         <div class="generator">
             Built with
             <a href="https://pages.github.com" rel="noreferrer" target="_blank" title="github-pages v{{ docs.versions.github-pages }}">GitHub Pages</a>
-            using a
-            <a href="https://github.com/{{ theme_alias | split: '@' | first }}" rel="noreferrer" target="_blank" title="{{ generator }} v{{ version }}">theme</a>
-            provided by
-            <a href="https://rundocs.io" rel="noreferrer" target="_blank">RunDocs</a>.
+            using a theme provided by RunDocs.
         </div>
     {% endunless %}
 </div>