refactor(layout): remove comments functionality from post layout

Author: lyhyl

_layouts/post.html

@@ -45,15 +45,5 @@ <h1 class="post-title p-name" itemprop="name headline">{{ page.title | escape }}
     {{ content }}
   </div>
 
-  {% if jekyll.environment == 'production' -%}
-    {% if page.comments == false -%}
-    <div class="comments-disabled-message">
-      Comments have been disabled for this post.
-    </div>
-    {% else -%}
-      {%- include comments.html -%}
-    {% endif -%}
-  {% endif -%}
-
   <a class="u-url" href="{{ page.url | relative_url }}" hidden></a>
 </article>