Remove stray reference to ElementFactory

Review at http://gwt-code-reviews.appspot.com/1423801

Review by: rjrjr@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@10017 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/src/com/google/gwt/uibinder/rebind/UiBinderGenerator.java b/user/src/com/google/gwt/uibinder/rebind/UiBinderGenerator.java
index 79f405c..10c56a4 100644
--- a/user/src/com/google/gwt/uibinder/rebind/UiBinderGenerator.java
+++ b/user/src/com/google/gwt/uibinder/rebind/UiBinderGenerator.java
@@ -47,8 +47,6 @@
 
   private static final String TEMPLATE_SUFFIX = ".ui.xml";
 
-  private static final String ELEMENT_FACTORY_PROPERTY = "uibinder.html.elementfactory";
-  
   private static final String XSS_SAFE_CONFIG_PROPERTY = "UiBinder.useSafeHtmlTemplates";
   
   /**