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

Change-Id: I4ec951ddbc0a5ad4718bb44731eb2b4a0f718afc
Reviewed-on: https://gerrit.libreoffice.org/60061
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>