Update feed.xml

feed.xml

@@ -37,9 +37,9 @@ layout: none
 				<pubDate>{{ post.date | date_to_rfc822 }}</pubDate>
 				<link>{{ site.url }}{{ post.url }}</link>
 				<guid isPermaLink="true">{{ site.url }}{{ post.url }}</guid>
-                {% if post.social_image %}
+                <!-- {% if post.social_image %}
                 <media:thumbnail width="250" height="250" url="{{ site.url }}{{ post.social_image }}"/>
-                {% endif %}
+                {% endif %} -->
             </item>
         {% endif %}
 		{% endfor %}