Remove pixel tracker

Author: xtuc

_layouts/default.html

@@ -47,10 +47,5 @@ <h1 id="content" class="page-title">{{ site["title"] }}</h1>
       </section>
     </main>
     {% include "./page_footer.html" %}
-    <img
-      class="hidden"
-      src="https://d3nrsflo8ae6b5.cloudfront.net/1x1.png"
-      alt="pixel"
-    />
   </body>
 </html>