unicode: move utf8cursor to utf8-selftest.c

Only used by the tests, so no need to keep it in the core.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>

fs/unicode/utf8-norm.c

@@ -456,22 +456,6 @@ int utf8ncursor(struct utf8cursor *u8c, const struct utf8data *data,
 }
 EXPORT_SYMBOL(utf8ncursor);
 
-/*
- * Set up an utf8cursor for use by utf8byte().
- *
- *   u8c    : pointer to cursor.
- *   data   : const struct utf8data to use for normalization.
- *   s      : NUL-terminated string.
- *
- * Returns -1 on error, 0 on success.
- */
-int utf8cursor(struct utf8cursor *u8c, const struct utf8data *data,
-	       const char *s)
-{
-	return utf8ncursor(u8c, data, s, (unsigned int)-1);
-}
-EXPORT_SYMBOL(utf8cursor);
-
 /*
  * Get one byte from the normalized form of the string described by u8c.
  *

fs/unicode/utf8-selftest.c

@@ -165,6 +165,12 @@ static ssize_t utf8len(const struct utf8data *data, const char *s)
 	return utf8nlen(data, s, (size_t)-1);
 }
 
+static int utf8cursor(struct utf8cursor *u8c, const struct utf8data *data,
+		const char *s)
+{
+	return utf8ncursor(u8c, data, s, (unsigned int)-1);
+}
+
 static void check_utf8_nfdi(void)
 {
 	int i;

fs/unicode/utf8n.h

@@ -65,8 +65,6 @@ struct utf8cursor {
  * Returns 0 on success.
  * Returns -1 on failure.
  */
-extern int utf8cursor(struct utf8cursor *u8c, const struct utf8data *data,
-		      const char *s);
 extern int utf8ncursor(struct utf8cursor *u8c, const struct utf8data *data,
 		       const char *s, size_t len);