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src/Sequents/prover.ML
changeset 74561 8e6c973003c8
parent 74302 6bc96f31cafd 
--- a/src/Sequents/prover.ML	Wed Oct 20 17:11:46 2021 +0200
+++ b/src/Sequents/prover.ML	Wed Oct 20 18:13:17 2021 +0200
@@ -46,7 +46,6 @@
 (
   type T = pack;
   val empty = empty_pack;
-  val extend = I;
   fun merge (Pack (safes, unsafes), Pack (safes', unsafes')) =
     Pack
      (sort_rules (Thm.merge_thms (safes, safes')),
isabelle