PlaylistFile: remove obsolete function TranslatePlaylistError()

src/PlaylistFile.cxx

@@ -126,29 +126,6 @@ spl_map_to_fs(const char *name_utf8, Error &error)
 	return path_fs;
 }
 
-gcc_pure
-static bool
-IsNotFoundError(const Error &error)
-{
-#ifdef WIN32
-	return error.IsDomain(win32_domain) &&
-		error.GetCode() == ERROR_FILE_NOT_FOUND;
-#else
-	return error.IsDomain(errno_domain) &&
-		error.GetCode() == ENOENT;
-#endif
-}
-
-void
-TranslatePlaylistError(Error &error)
-{
-	if (IsNotFoundError(error)) {
-		error.Clear();
-		error.Set(playlist_domain, int(PlaylistResult::NO_SUCH_LIST),
-			  "No such playlist");
-	}
-}
-
 /**
  * Create an #Error for the current errno.
  */