Fixed building on macos

src/common/visitor/translation_unit_visitor.cc

@@ -26,7 +26,6 @@ namespace clanguml::common::visitor {
 translation_unit_visitor::translation_unit_visitor(
     clang::SourceManager &sm, const clanguml::config::diagram &config)
     : source_manager_{sm}
-    , config_{config}
 {
     if (config.comment_parser() == config::comment_parser_t::plain) {
         comment_visitor_ =

src/common/visitor/translation_unit_visitor.h

@@ -103,8 +103,6 @@ protected:
 private:
     clang::SourceManager &source_manager_;
 
-    [[maybe_unused]] const clanguml::config::diagram &config_;
-
     std::unique_ptr<comment::comment_visitor> comment_visitor_;
 };
 } // namespace clanguml::common::visitor