removing the declaration of ascii_has_upper_case

Author: lemire

fuzz/idna.cc

@@ -15,7 +15,6 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
    */
   ada::idna::to_ascii(source);
   ada::idna::to_unicode(source);
-  ada::idna::ascii_has_upper_case(source.data(), source.length());
 
   return 0;
 }

include/ada/ada_idna.h

@@ -35,8 +35,6 @@ namespace ada::idna {
 
 // If the input is ascii, then the mapping is just -> lower case.
 void ascii_map(char* input, size_t length);
-// check whether an ascii string needs mapping
-bool ascii_has_upper_case(char* input, size_t length);
 // Map the characters according to IDNA, returning the empty string on error.
 std::u32string map(std::u32string_view input);