Android: Simplify 32bit detection logic

Change-Id: I379e8903294dce644bd9f0214b596b56e5d7d81e
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/android/androidconfigurations.h

@@ -215,7 +215,6 @@ private:
     static AndroidConfigurations *m_instance;
     AndroidConfig m_config;
     std::unique_ptr<Internal::AndroidSdkManager> m_sdkManager;
-    bool m_force32bit;
 };
 
 } // namespace Android