remove ref to JSONeditor.js which has been removed

Author: danielsdeleo

chef-server-webui/app/views/layout/login.html.haml

@@ -9,7 +9,6 @@
     = js_include_tag "/facebox/facebox.js"
     = js_include_tag "jquery-ui-1.7.1.custom.min"
     = js_include_tag "jquery.treeTable.min"
-    = js_include_tag "JSONeditor"
     = js_include_tag "chef"
         
   %body