minor improve quick demo

Zhao Yuhang

2023-12-18 44fee9aa1e3087635d1394612c6f6ceab44ba7b0

 src/CMakeLists.txt

@@ -208,7 +208,5 @@
    )

    # Install shared files
    install(DIRECTORY ../share/
        DESTINATION share/${QWINDOWKIT_INSTALL_NAME}
    )
    include("../share/install.cmake")
endif()