Removing my_strnncoll_mb_bin() and my_strnncollsp_mb_bin(),

as they are not used any more.
We now use function templates from strcoll.ic instead.

include/m_ctype.h

@@ -800,16 +800,6 @@ uint my_instr_mb(CHARSET_INFO *,
                  const char *s, size_t s_length,
                  my_match_t *match, uint nmatch);
 
-int my_strnncoll_mb_bin(CHARSET_INFO * cs,
-                        const uchar *s, size_t slen,
-                        const uchar *t, size_t tlen,
-                        my_bool t_is_prefix);
-
-int my_strnncollsp_mb_bin(CHARSET_INFO *cs,
-                          const uchar *a, size_t a_length,
-                          const uchar *b, size_t b_length,
-                          my_bool diff_if_only_endspace_difference);
-
 int my_wildcmp_mb_bin(CHARSET_INFO *cs,
                       const char *str,const char *str_end,
                       const char *wildstr,const char *wildend,

strings/ctype-mb.c

@@ -571,93 +571,6 @@ uint my_instr_mb(CHARSET_INFO *cs,
 }
 
 
-/* BINARY collations handlers for MB charsets */
-
-int
-my_strnncoll_mb_bin(CHARSET_INFO * cs __attribute__((unused)),
-                    const uchar *s, size_t slen,
-                    const uchar *t, size_t tlen,
-                    my_bool t_is_prefix)
-{
-  size_t len=MY_MIN(slen,tlen);
-  int cmp= memcmp(s,t,len);
-  return cmp ? cmp : (int) ((t_is_prefix ? len : slen) - tlen);
-}
-
-
-/*
-  Compare two strings. 
-  
-  SYNOPSIS
-    my_strnncollsp_mb_bin()
-    cs			Chararacter set
-    s			String to compare
-    slen		Length of 's'
-    t			String to compare
-    tlen		Length of 't'
-    diff_if_only_endspace_difference
-		        Set to 1 if the strings should be regarded as different
-                        if they only difference in end space
-
-  NOTE
-   This function is used for character strings with binary collations.
-   The shorter string is extended with end space to be as long as the longer
-   one.
-
-  RETURN
-    A negative number if s < t
-    A positive number if s > t
-    0 if strings are equal
-*/
-
-int
-my_strnncollsp_mb_bin(CHARSET_INFO * cs __attribute__((unused)),
-                      const uchar *a, size_t a_length, 
-                      const uchar *b, size_t b_length,
-                      my_bool diff_if_only_endspace_difference)
-{
-  const uchar *end;
-  size_t length;
-  int res;
-
-#ifndef VARCHAR_WITH_DIFF_ENDSPACE_ARE_DIFFERENT_FOR_UNIQUE
-  diff_if_only_endspace_difference= 0;
-#endif
-  
-  end= a + (length= MY_MIN(a_length, b_length));
-  while (a < end)
-  {
-    if (*a++ != *b++)
-      return ((int) a[-1] - (int) b[-1]);
-  }
-  res= 0;
-  if (a_length != b_length)
-  {
-    int swap= 1;
-    if (diff_if_only_endspace_difference)
-      res= 1;                                   /* Assume 'a' is bigger */
-    /*
-      Check the next not space character of the longer key. If it's < ' ',
-      then it's smaller than the other key.
-    */
-    if (a_length < b_length)
-    {
-      /* put shorter key in s */
-      a_length= b_length;
-      a= b;
-      swap= -1;					/* swap sign of result */
-      res= -res;
-    }
-    for (end= a + a_length-length; a < end ; a++)
-    {
-      if (*a != ' ')
-	return (*a < ' ') ? -swap : swap;
-    }
-  }
-  return res;
-}
-
-
 /*
   Copy one non-ascii character.
   "dst" must have enough room for the character.