The code is using expicit (mostly W) Windows API, and is independent
from the macro. Removing it here allows to catch places where some
UNICODE-dependent macro is used unintentionally.

Change-Id: I5dff40aecfc3c3dc7fc4cf7271a995a675943a45
Reviewed-on: https://gerrit.libreoffice.org/70237Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Tested-by: Mike Kaganski <mike.kaganski@collabora.com>