Migration code will be removed in qt6 + AA_UseHighDpiPixmaps is enabled by default in qt6

src/Konquest.cc

@@ -24,7 +24,9 @@ int
 main(int argc, char **argv)
 {
     // Fixes blurry icons with fractional scaling
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     QGuiApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+#endif
     QApplication app(argc, argv);
 
     Kdelibs4ConfigMigrator migrate(QStringLiteral("konquest"));