compat: remove mingw_mktemp()

Remove the mktemp(3) compatibility function now that its last caller was
removed by the previous commit.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: rscharfe

compat/mingw-posix.h

@@ -241,9 +241,6 @@ int mingw_chdir(const char *dirname);
 int mingw_chmod(const char *filename, int mode);
 #define chmod mingw_chmod
 
-char *mingw_mktemp(char *template);
-#define mktemp mingw_mktemp
-
 char *mingw_getcwd(char *pointer, int len);
 #define getcwd mingw_getcwd
 

compat/mingw.c

@@ -1162,18 +1162,6 @@ unsigned int sleep (unsigned int seconds)
 	return 0;
 }
 
-char *mingw_mktemp(char *template)
-{
-	wchar_t wtemplate[MAX_PATH];
-	if (xutftowcs_path(wtemplate, template) < 0)
-		return NULL;
-	if (!_wmktemp(wtemplate))
-		return NULL;
-	if (xwcstoutf(template, wtemplate, strlen(template) + 1) < 0)
-		return NULL;
-	return template;
-}
-
 int mkstemp(char *template)
 {
 	return git_mkstemp_mode(template, 0600);