Remove option to turn off GwtAstBuilder.

Review by: zundel@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@10484 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/dev/core/src/com/google/gwt/dev/jjs/impl/GwtAstBuilder.java b/dev/core/src/com/google/gwt/dev/jjs/impl/GwtAstBuilder.java
index 831aa25..80fb3a3 100644
--- a/dev/core/src/com/google/gwt/dev/jjs/impl/GwtAstBuilder.java
+++ b/dev/core/src/com/google/gwt/dev/jjs/impl/GwtAstBuilder.java
@@ -2758,7 +2758,7 @@
     }
   }
 
-  public static boolean ENABLED = !System.getProperties().containsKey("x.gwt.noAstBuilder");
+  public static boolean ENABLED = true;
 
   /**
    * Manually tracked version count.