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

Change-Id: Iacc5b98b947a26ca920cb9c49e579bc61d69b0c9
Reviewed-on: https://gerrit.libreoffice.org/62119
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>