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

Change-Id: I8061ef6a7a8c04baf350844fae1f97836ac03554
Reviewed-on: https://gerrit.libreoffice.org/62399
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>