pmt: revert 7f8090b

include/libgnulib/exitfail.h

@@ -1,28 +0,0 @@
-/* Failure exit status
-
-   Copyright (C) 2002, 2009-2024 Free Software Foundation, Inc.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-extern int volatile exit_failure;
-
-
-#ifdef __cplusplus
-}
-#endif