Android: Use more direct access to current config singleton

Change-Id: Ica5ba556ac022fe39ed4439d023cda1742344eed
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/android/androidsdkmanager.h

@@ -40,7 +40,7 @@ public:
         QString stdError;
     };
 
-    explicit AndroidSdkManager(const AndroidConfig &config);
+    AndroidSdkManager();
     ~AndroidSdkManager() override;
 
     SdkPlatformList installedSdkPlatforms();