Revert "docs: add link to developer survey on main landing pages"

This reverts commit da31f2ea9274614da18aa2544fc43fb4ee213741.
diff --git a/docs/html/channels/io2013.jd b/docs/html/channels/io2013.jd
index b2bde31..977eb2f 100644
--- a/docs/html/channels/io2013.jd
+++ b/docs/html/channels/io2013.jd
@@ -1,15 +1,7 @@
 fullpage=true
 page.title=Google I/O 13
 @jd:body
-<div id="butterbar-wrapper" >
-  <div id="butterbar" >
-    <div id="butterbar-message">
-<a target="_blank" href="https://docs.google.com/a/google.com/forms/d/1EHLPGqhbxj2HungHRRN4_0K9TGpc-Izy-u46vBDgS8Q/viewform">
-      Take the Android Developer Survey</a>
-    </div>
-  </div>
-</div>
-
+    
 <style>
 #ioplayer-frame {
   z-index:10;