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

Change-Id: I4fa8e6e7dad8b87d8e31140de35fa948f631bee9
Reviewed-on: https://gerrit.libreoffice.org/65888
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>