fix Warning

qt6-after/qt6-migrated-legatus/Lts/Tools/DBUpdate/main.cpp

@@ -71,8 +71,7 @@ int main(int argc, char *argv[])
   QCoreApplication::setApplicationName(QLatin1String("DBUpdate"));
   QCoreApplication::setOrganizationName(QLatin1String("RME"));
 
-  if (!bHeadless)
-    app->setAttribute(Qt::AA_UseHighDpiPixmaps);
+  // Qt::AA_UseHighDpiPixmaps: no-op since Qt6 (high-DPI pixmaps are always enabled)
 
   NGL::LoggerHandler *lh = dynamic_cast<NGL::LoggerHandler*>(app.data());
   lh->createLogger("dbu", "log4cxx_dbu.props");