utf8.c: Rmv #undef

This is unnecessary in a .c file, and the code it referred to has been
moved away.

1 files changed, 0 insertions, 2 deletions

diff --git a/utf8.c b/utf8.c
index 61ed5313c8..a2c81605e6 100644
--- a/utf8.c
+++ b/utf8.c
@@ -773,8 +773,6 @@ S_does_utf8_overflow(const U8 * const s,
 
 }
 
-#undef FF_OVERLONG_PREFIX
-
 STRLEN
 Perl_is_utf8_char_helper_(const U8 * const s, const U8 * e, const U32 flags)
 {