deleted file mode 100644
--- a/lib/unistr/u32-mbtouc-safe.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006 Free Software Foundation, Inc.
-   Written by Bruno Haible <bruno@clisp.org>, 2002.
-
-   This program is free software; you can redistribute it and/or modify it
-   under the terms of the GNU Library General Public License as published
-   by the Free Software Foundation; either version 2, or (at your option)
-   any later version.
-
-   This program 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
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with this program; if not, write to the Free Software
-   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-   USA.  */
-
-#include <config.h>
-
-/* Specification.  */
-#include "unistr.h"
-
-#if !HAVE_INLINE
-
-int
-u32_mbtouc_safe (ucs4_t *puc, const uint32_t *s, size_t n)
-{
-  uint32_t c = *s;
-
-  if (c < 0xd800 || (c >= 0xe000 && c < 0x110000))
-    *puc = c;
-  else
-    /* invalid multibyte character */
-    *puc = 0xfffd;
-  return 1;
-}
-
-#endif