Drop duplicate _ctype_ declaration from ctype_.h

It's already defined in ctype.h.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

newlib/libc/ctype/ctype_.h

@@ -11,7 +11,7 @@
 
 #else	/* !ALLOW_NEGATIVE_CTYPE_INDEX */
 
-  extern char _ctype_[];
+  /* _ctype_ is declared in <ctype.h>. */
 # define DEFAULT_CTYPE_PTR	((char *) _ctype_)
 
 #endif	/* !ALLOW_NEGATIVE_CTYPE_INDEX */

newlib/libc/locale/setlocale.h

@@ -183,7 +183,7 @@ struct __locale_t
   int			(*mbtowc) (struct _reent *, wchar_t *,
 				   const char *, size_t, mbstate_t *);
   int			 cjk_lang;
-  char			*ctype_ptr; /* Unused in __global_locale */
+  char			*ctype_ptr;
   struct lconv		 lconv;
 #ifndef __HAVE_LOCALE_INFO__
   char			 mb_cur_max[2];