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

Change-Id: I04c5ba277d5b3398c07de6ae66713d977636088d
Reviewed-on: https://gerrit.libreoffice.org/61347
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>