diff -r a43d61270142 -r 58a7b3fdc193 src/HOL/Tools/refute.ML
--- a/src/HOL/Tools/refute.ML	Sun Jul 17 14:12:45 2011 +0200
+++ b/src/HOL/Tools/refute.ML	Sun Jul 17 14:21:19 2011 +0200
@@ -62,7 +62,6 @@
 (* Additional functions used by Nitpick (to be factored out)                 *)
 (* ------------------------------------------------------------------------- *)
 
-  val close_form : term -> term
   val get_classdef : theory -> string -> (string * term) option
   val norm_rhs : term -> term
   val get_def : theory -> string * typ -> (string * term) option