Android: Use Qt5-style connects

The heavy lifting was done by clazy.

Change-Id: Id09b62b7b9812d9c0981202c257d18387a8b09d9
Reviewed-by: BogDan Vatra <bogdan@kdab.com>

src/plugins/android/avddialog.h

@@ -48,9 +48,8 @@ public:
     int sdcardSize() const;
     bool isValid() const;
 
-private slots:
-    void updateApiLevelComboBox();
 private:
+    void updateApiLevelComboBox();
     bool eventFilter(QObject *obj, QEvent *event);
 
     Ui::AddNewAVDDialog m_avdDialog;