Remove atom_decl from the parser.
--- a/Nominal/Parser.thy Fri Mar 19 10:23:52 2010 +0100
+++ b/Nominal/Parser.thy Fri Mar 19 10:24:16 2010 +0100
@@ -2,8 +2,6 @@
imports "Nominal2_Atoms" "Nominal2_Eqvt" "Nominal2_Supp" "Perm" "Fv" "Rsp" "Lift"
begin
-atom_decl name
-
section{* Interface for nominal_datatype *}
text {*