Remove workaround macros for hosts that have mbrtowc but not
mbstate_t, as we now insist on proper declarations for both
before using mbrtowc.
# include <wchar.h>
#endif
-#if HAVE_MBRTOWC
-size_t mbrtowc ();
-# ifdef mbstate_t
-# define mbrtowc(pwc, s, n, ps) (mbrtowc) (pwc, s, n, 0)
-# define mbsinit(ps) 1
-# endif
-#else
+#if !HAVE_MBRTOWC
/* Disable multibyte processing entirely. Since MB_CUR_MAX is 1, the
other macros are defined only for documentation and to satisfy C
syntax. */