--- a/src/HOL/ex/ROOT.ML Mon Mar 23 19:01:17 2009 +0100 +++ b/src/HOL/ex/ROOT.ML Mon Mar 23 19:01:17 2009 +0100 @@ -21,7 +21,6 @@ use_thys [ "Numeral", - "ImperativeQuicksort", "Higher_Order_Logic", "Abstract_NAT", "Guess",