Found with bin/find-unneeded-includes
Only removal proposals are dealt with here.

Change-Id: I5f445522e9a1ccd60555e992adf345b254b2ac83
Reviewed-on: https://gerrit.libreoffice.org/60335
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>