Drop support for QDBusTrayIcon for not being exported by Qt

Author: grulja

src/theme/qgnomeplatformtheme.cpp

@@ -31,10 +31,6 @@
 #include <gtk-3.0/gtk/gtk.h>
 #define signals Q_SIGNALS
 
-#ifndef QT_NO_SYSTEMTRAYICON
-#include <private/qdbustrayicon_p.h>
-#endif
-
 QGnomePlatformTheme::QGnomePlatformTheme()
 {
     if (QGuiApplication::platformName() != QStringLiteral("xcb")) {
@@ -109,27 +105,9 @@ QPlatformDialogHelper *QGnomePlatformTheme::createPlatformDialogHelper(QPlatform
     }
 }
 
-#ifndef QT_NO_SYSTEMTRAYICON
-static bool isDBusTrayAvailable() {
-    static bool dbusTrayAvailable = false;
-    static bool dbusTrayAvailableKnown = false;
-    if (!dbusTrayAvailableKnown) {
-        QDBusMenuConnection conn;
-        if (conn.isStatusNotifierHostRegistered()) {
-            dbusTrayAvailable = true;
-        }
-        dbusTrayAvailableKnown = true;
-    }
-    return dbusTrayAvailable;
-}
-#endif
-
 #ifndef QT_NO_SYSTEMTRAYICON
 QPlatformSystemTrayIcon* QGnomePlatformTheme::createPlatformSystemTrayIcon() const
 {
-    if (isDBusTrayAvailable()) {
-        return new QDBusTrayIcon();
-    }
     return Q_NULLPTR;
 }
 #endif