Remove deprecated function 'to_utf8_case()'

This is keeping with the schedule for 5.28.

1 files changed, 0 insertions, 5 deletions

diff --git a/proto.h b/proto.h
index f60564370a..b581ffdbaf 100644
--- a/proto.h
+++ b/proto.h
@@ -3515,11 +3515,6 @@ PERL_CALLCONV U32	Perl_to_uni_upper_lc(pTHX_ U32 c)
 			__attribute__deprecated__
 			__attribute__warn_unused_result__;
 
-PERL_CALLCONV UV	Perl_to_utf8_case(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp, SV **swashp, const char *normal, const char *special)
-			__attribute__deprecated__;
-#define PERL_ARGS_ASSERT_TO_UTF8_CASE	\
-	assert(p); assert(ustrp); assert(swashp); assert(normal)
-
 #ifndef NO_MATHOMS
 PERL_CALLCONV UV	Perl_to_utf8_fold(pTHX_ const U8 *p, U8* ustrp, STRLEN *lenp)
 			__attribute__deprecated__;