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

Change-Id: I9770343f31f882427c9ae13e363b59cd1fb47e98
Reviewed-on: https://gerrit.libreoffice.org/71295
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>