remove dubugging stuff

_includes/twittercard.html

@@ -14,13 +14,10 @@
 
 {% if feature_image %}
   {% if feature_image contains '://' %}
-  <p>a</p>
     <meta name="twitter:image" content="{{feature_image}}">
   {% else %}
-  <p>b</p>
     <meta name="twitter:image" content="{{site.url}}{{site.baseurl}}{{feature_image}}">
   {% endif %}
 {% else %}
-<p>c</p>
   <meta name="twitter:image" content="{{site.url}}/{{site.baseurl}}{{ site.default-feature }}">
 {% endif %}