remove unused code

Zhao Yuhang

2023-12-10 4085174ccca1f6c9490e333fdeea8e27041157ce

 src/quick/quickwindowagent_p.h

@@ -14,6 +14,8 @@

        void init();

        AbstractWindowContext * createContext() const override;

        // Host
        QQuickWindow *hostWindow{};
    };