pmt: revert 7f8090b

include/libgnulib/mbmemcasecmp.h

@@ -1,45 +0,0 @@
-/* Compare two memory areas with possibly different lengths, case-insensitive.
-   Copyright (C) 2009-2024 Free Software Foundation, Inc.
-
-   This program 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 3 of the License, 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
-   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/>.  */
-
-#ifndef MBMEMCASECMP_H
-#define MBMEMCASECMP_H
-
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-/* Compare the memory regions S1 = [s1..s1+N1-1], S2 = [s2..s2+n2-1], that
-   contain character sequences, lexicographically, ignoring case.
-   This function's result is locale dependent.  Unlike memcasecmp(), it works
-   correctly in multibyte locales and also handles Turkish i / dotless i.
-   Unlike ulc_casecmp(), it does not handle the German sharp s and the Greek
-   final sigma.  Unlike memcoll() and ulc_casecoll(), it ignores collation
-   order.
-   Return a negative number if S1 < S2, a positive number if S1 > S2, or
-   0 if S1 and S2 have the same contents.
-   Note: This function may, in multibyte locales, return 0 for strings of
-   different lengths!  */
-extern int mbmemcasecmp (const char *s1, size_t n1, const char *s2, size_t n2);
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* MBMEMCASECMP_H */