src/HOL/Library/Heap.thy

--- a/src/HOL/Library/Heap.thy	Wed May 07 10:59:29 2008 +0200
+++ b/src/HOL/Library/Heap.thy	Wed May 07 10:59:32 2008 +0200
@@ -29,8 +29,6 @@
 
 instance int :: heap ..
 
-instance set :: ("{heap, finite}") heap ..
-
 instance message_string :: countable
   by (rule countable_classI [of "message_string_case to_nat"])
    (auto split: message_string.splits)