Remove SvOOK_on

Nothing is using in core or on CPAN.  It is not part of the API.

1 files changed, 0 insertions, 1 deletions

diff --git a/sv.h b/sv.h
index 7e80e77b93..dcd53f79d3 100644
--- a/sv.h
+++ b/sv.h
@@ -848,7 +848,6 @@ in gv.h: */
 				 ? mg_find(sv,PERL_MAGIC_vstring) : NULL)
 
 #define SvOOK(sv)		(SvFLAGS(sv) & SVf_OOK)
-#define SvOOK_on(sv)		((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
 #define SvOOK_off(sv)		((void)(SvOOK(sv) && sv_backoff(sv)))
 
 #define SvFAKE(sv)		(SvFLAGS(sv) & SVf_FAKE)