Android: fix sdkmanager duplicating packages list

It seems that forcing sdkmanager reloadPackages is causing a duplication
in all packages and ndk listings.

Change-Id: I7e92d1c6dcec2a09db088d9596aca31a3d8b437f
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/android/androidsettingswidget.cpp

@@ -342,7 +342,7 @@ void AndroidSettingsWidget::showEvent(QShowEvent *event)
         // Reloading SDK packages (force) is still synchronous. Use zero timer
         // to let settings dialog open first.
         QTimer::singleShot(0, std::bind(&AndroidSdkManager::reloadPackages,
-                                        m_sdkManager.get(), true));
+                                        m_sdkManager.get(), false));
         m_isInitialReloadDone = true;
     }
 }