remove unused workarounds

Zhao Yuhang

2023-12-17 d522300857fd6d321e657381799804960f7f1678

 src/core/CMakeLists.txt

@@ -42,7 +42,6 @@
        contexts/qtwindowcontext_p.h
        contexts/qtwindowcontext.cpp
    )
    list(APPEND _defines_private QWINDOWKIT_FORCE_QT_WINDOW_CONTEXT)
else()
    if(WIN32)
        list(APPEND _src