DB - remove sch_ver from record data

[dvstans]

The schema version field is no longer needed (ver is combined with ID). Remove the sch_ver field from RecordData message and anywhere else it is not needed. (It IS required for some messages.)

[JoshuaSBrown]

Clarification

Does the schema id always increase with new versions, if not won't this cause problems?

[dvstans]

Schema versions are automatic monotonically increasing integers, so no problem.