Remove cite placeholder.

Author: stumbo

layouts/bibliography/single.html

@@ -51,7 +51,6 @@ <h1>{{ .Title }}</h1>
       No URL to the document is available.
     {{ end }}
     <br>
-    Cite:  placeholder for link to retrieve citation from Zotero 
 </p>
 <p>
     <strong>Abstract</strong>