diff -r fb9c119e5b49 -r d804e93ae9ff src/HOL/Library/Library.thy
--- a/src/HOL/Library/Library.thy	Sun Aug 01 23:18:13 2021 +0200
+++ b/src/HOL/Library/Library.thy	Mon Aug 02 10:01:06 2021 +0000
@@ -4,10 +4,8 @@
   AList
   Adhoc_Overloading
   BigO
-  Bit_Operations
   BNF_Axiomatization
   BNF_Corec
-  Boolean_Algebra
   Bourbaki_Witt_Fixpoint
   Char_ord
   Code_Cardinality