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

When rechecking make sure to add
-I/$SRCDIR/workdir/YaccTarget/unoidl/source/
to the IWYU cmd to get correct results

Change-Id: Ie3c97d2152ebba80d7c84607bf82b9bed2790eae
Reviewed-on: https://gerrit.libreoffice.org/67520
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>