since cdecl is the default calling convention on Windows for
such functions, the annotation is redundant.

Change-Id: I1a85fa27e5ac65ce0e04a19bde74c90800ffaa2d
Reviewed-on: https://gerrit.libreoffice.org/46164Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>