app: remove errant share handler

Change-Id: I3bb0b7a86ff6dbec88055e7c1cdcc671582f12b6
Reviewed-on: https://go-review.googlesource.com/22491
Reviewed-by: Andrew Gerrand <adg@golang.org>
diff --git a/app/static/playground-embed.js b/app/static/playground-embed.js
index c3870fd..45a496d 100644
--- a/app/static/playground-embed.js
+++ b/app/static/playground-embed.js
@@ -37,11 +37,6 @@
     code[0].addEventListener('input', inputChanged);
   }
 
-  share.click(function(){
-    embedLabel.show();
-    embed.prop('checked', false);
-  });
-
   var embedHTML = $(opts.embedHTMLEl).hide();
   var embedding = false;
   embed.change(function() {