Android: Remove unused #includes in splashscreenwidget.cpp

Change-Id: Ib2a7f3087602516d69b8e2553f16953a2287bbc1
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/android/splashscreenwidget.h

@@ -15,8 +15,7 @@ class QColor;
 class QImage;
 QT_END_NAMESPACE
 
-namespace Android {
-namespace Internal {
+namespace Android::Internal {
 
 class SplashScreenWidget : public QWidget
 {
@@ -73,5 +72,4 @@ private:
     bool m_showImageFullScreen = false;
 };
 
-} // namespace Internal
-} // namespace Android
+} // Android::Internal