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Not sure if it's acceptable for anyone to sign-off on a patch.
I was able to verify this macro is indeed no longer being used
in the codebase.
From the root directory of wine-git:
$ grep -rnw . -e 'GDI_NO_MORE_WORK'
./dlls/win32u/ntgdi_private.h:94:#define GDI_NO_MORE_WORK 2
$