The _XSheetAnnotations test is already written in C++ since commit
654e275f.

Change-Id: Ie4d8459f503289cd9fd1c52b9121377826921bc3
Reviewed-on: https://gerrit.libreoffice.org/39619Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>