Check if songs are in playlist when displaying them, not up-front

src/helpers.h

@@ -398,17 +398,6 @@ std::string getSharedDirectory(Iterator first, Iterator last)
 	return result;
 }
 
-template <typename ListT>
-void markSongsInPlaylist(ListT &list)
-{
-	ScopedUnfilteredMenu<typename ListT::Item::Type> sunfilter(ReapplyFilter::No, list);
-	for (auto &p : static_cast<SongList &>(list))
-	{
-		if (p.song() != nullptr)
-			p.properties().setBold(myPlaylist->checkForSong(*p.song()));
-	}
-}
-
 template <typename Iterator>
 bool addSongsToPlaylist(Iterator first, Iterator last, bool play, int position)
 {