Remove NodeFocusManager tests from smoke tests.

The testing env blurs the window that is running the tests, but
focus and blur behave differently when the window is blurred.
This is causing some tests to fail inappropriately.

src/common/tests/smoketests.xml

@@ -32,7 +32,7 @@
         <url>json/tests/json.html</url>
         <url>jsonp/tests/jsonp.html</url>
         <url>node/tests/node.html</url>
-        <url>node-focusmanager/tests/focusmanager.html</url>
+        <!--url>node-focusmanager/tests/focusmanager.html</url-->
         <url>pluginhost/tests/plugins.html</url>
         <url>slider/tests/slider.html</url>
         <url>widget/tests/widget.html</url>