Moved series2.html over series.html, remove reference to old file.

layouts/posts/single.html

@@ -48,8 +48,7 @@
 
         <div class="post-info">
             {{ partial "tags.html" .Params.tags }}
-            <!-- {{ partial "series.html" .Params.series }} -->
-            {{ partial "series2.html" . }}
+            {{ partial "series.html" . }}
             {{ partial "categories.html" . }}
 
             {{- if .GitInfo }}