Remove defines now that fontconfig baseline has been updated

Change-Id: Ia97ab24e60785be36f475f6bf275a0ae336e9408
Reviewed-on: https://gerrit.libreoffice.org/7461
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>