Remove unused Wordpress-specific JS

This code seems to be related to this Wordpress feature [1] which only
seems relevant where users are adding e.g. comments to a site.

[1]: https://make.wordpress.org/core/2015/10/28/new-embeds-feature-in-wordpress-4-4/

_layouts/home.html

@@ -63,7 +63,6 @@
   {% include footer.html %}
 
   <script type='text/javascript' src='{{ site.github.url }}/app/themes/coop-tech-oowp-theme/public/js/app.js?ver=4.8'></script>
-  <script type='text/javascript' src='{{ site.github.url }}/wp/wp-includes/js/wp-embed.min.js?ver=4.8'></script>
 </body>
 
 </html>