[FRG-13] remove dangling bits of Saffron which are still hanging around in Farrago

[dynamobi-build]

[reporter="jvs", created="Fri, 30 Dec 2005 12:59:54 -0500 (GMT-05:00)"]
e.g. RelOptSchema, RelOptConnection; these are just confusing in the Farrago context. Also SaffronProperties.