QDBusConnectionManager: Remove unused member variables

Change-Id: If9e452e81db0fefa10704b83e6447ccef0763b59
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/dbus/qdbusconnectionmanager_p.h

@@ -65,9 +65,6 @@ private:
 
     QMutex defaultBusMutex;
     QDBusConnectionPrivate *defaultBuses[2];
-
-    mutable QMutex senderMutex;
-    QString senderName; // internal; will probably change
 };
 
 QT_END_NAMESPACE