docs: use devsite hdf bool as a javascript condition for managing the lang toggle.

sync the sdk and ds templates so we can move toward one template set

Change-Id: I5316d4cd085734a47953beba203ba8beeb64549e

tools/droiddoc/templates-sdk/customizations.cs

@@ -330,12 +330,7 @@ def:custom_left_nav() ?><?cs
     call:about_nav() ?><?cs 
   else ?><?cs 
     call:default_left_nav() ?> <?cs 
-  /if ?>
-    <script>
-      $(document).ready(function() {
-        changeDocLang(getLangPref());
-        });
-    </script><?cs 
+  /if ?><?cs 
 /def ?>
 
 <?cs # appears at the bottom of every page ?><?cs