diff --git a/posts-by-categories.html b/posts-by-categories.html
deleted file mode 100644
index 6b2c0ecd5..000000000
--- a/posts-by-categories.html
+++ /dev/null
@@ -1,45 +0,0 @@
----
-layout: post
-title: "Posts by category"
-description: "A Clean Blog Theme by Start Bootstrap"
-header-img: "img/post-bg-01.jpg"
----
-
-<div class="container-fluid index">
-  <div class="row index all-posts">
-
-    <h1 class="header author-header">{{ site.author_name }}</h1>
-    <h2 class="header" itemprop="headline">All posts</h2>
-    <h2 class="header categories" itemprop="headline"><small>grouped by
-
-      <div class="dropdown btn-group">
-        <button class="btn btn-categories dropdown-toggle btn-xs" type="button" data-toggle="dropdown">Categories
-          <span class="caret"></span>
-        </button>
-        <ul class="dropdown-menu">
-          <li><a href="{{ site.baseurl }}/blog/">Years</a></li>
-        </ul>
-      </div>
-
-    </small></h2>     
-      
-      {% for category in site.categories %}
-      <div class="col-md-12 content-panel articles">
-        <h2 id="{{ category | first }}-ref">{{ category | first }}</h2>
-        <ul style="list-style: none;">
-          {% for posts in category %}
-            {% for post in posts %}
-              <li>
-                <hr>
-                <!-- problem of for cycle can't use images <img src="/{{ post.header-img | prepend: site.baseurl }}" class="img-responsive" alt="{{ post.title }}"> -->
-                <h3><a href="{{ post.url | prepend: site.baseurl }}">{{ post.title }}</a></h3>
-                <small class="hidden-xs">{{ post.date | date: "%B %-d, %Y" }}</small>
-              </li>
-            {% endfor %}
-          {% endfor %}
-
-        </ul>
-      </div>
-      {% endfor %}
-  </div>
-</div>