Also remove some GraphicObjectTest because they call into
GraphicManager which now doesn't exist anymore.

Change-Id: Ia434736d8611df629af3e897c878a7fb8bbe4706
Reviewed-on: https://gerrit.libreoffice.org/52243Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>