Remove Disqus from the posts

No one ever used them anyway.

_includes/disqus.html

@@ -1,14 +0,0 @@
-<div id="disqus_thread"></div>
-<script type="text/javascript">
-    var disqus_shortname = 'gergelypolonkai';
-
-    (function() {
-        var dsq = document.createElement('script');
-        dsq.type = 'text/javascript';
-        dsq.async = true;
-        dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';
-        (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
-    })();
-</script>
-<noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
-<a href="http://disqus.com" class="dsq-brlink">comments powered by <span class="logo-disqus">Disqus</span></a>

_layouts/post.html

@@ -16,5 +16,3 @@ render_post: true
 {% endif %}
     </ul>
 </nav>
-
-{% include disqus.html %}