`Python/codecs.c`: Remove unused forward declaration (#139511)

diff --git a/Python/codecs.c b/Python/codecs.c
index 364e07990ba42aaf6a0f9ad6917fe840c8e34285..0bde56c0ac662e10ea31aece19ab73c3bbde57aa 100644 (file)
--- a/Python/codecs.c
+++ b/Python/codecs.c
@@ -83,8 +83,6 @@ PyCodec_Unregister(PyObject *search_function)
     return 0;
 }
 
-extern int _Py_normalize_encoding(const char *, char *, size_t);
-
 /* Convert a string to a normalized Python string: all ASCII letters are
    converted to lower case, spaces are replaced with hyphens. */