pmt: revert 7f8090b

include/libgnulib/unistr/u-cpy.h

@@ -1,33 +0,0 @@
-/* Copy piece of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2024 Free Software Foundation, Inc.
-   Written by Bruno Haible <bruno@clisp.org>, 2002.
-
-   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/>.  */
-
-#include <string.h>
-
-UNIT *
-FUNC (UNIT *dest, const UNIT *src, size_t n)
-{
-#if 0
-  UNIT *destptr = dest;
-
-  for (; n > 0; n--)
-    *destptr++ = *src++;
-#else
-  if (n > 0)
-    memcpy ((char *) dest, (const char *) src, n * sizeof (UNIT));
-#endif
-  return dest;
-}