Remove event observer

Sine Striker

2023-12-13 44c08f3cc456155b960ca5a115df93109d2202ce

 src/core/contexts/win32windowcontext_p.h

@@ -51,9 +51,6 @@
        bool nonClientCalcSizeHandler(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam,
                                      LRESULT *result);

        bool themeStuffHandler(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam,
                               LRESULT *resul);

    protected:
        WId windowId = 0;