doc/root.html: remove key from jsapi src

R=rsc, r
CC=golang-dev
https://golang.org/cl/1010041

doc/root.html

@@ -8,7 +8,7 @@
 </script>
 
 <!-- begin blog post widget JS/styles -->
-<script src="http://www.google.com/jsapi/?key=ABQIAAAA4TEcjQ5y1r35xLDoRydN_RQJvypqxg_hbbvOIUrMXndwfI6kkBStplaG-3V8WLePPIt0A4nJSKKJdA" type="text/javascript"></script>
+<script src="http://www.google.com/jsapi" type="text/javascript"></script>
 <script src="http://www.google.com/uds/solutions/dynamicfeed/gfdynamicfeedcontrol.js" type="text/javascript"></script>
 <script type="text/javascript">
 function loadFeedControl() {