Make `information.date.sql.format` option obsolete

[yruslan]

Background

This option was used to create DATE literals when the concept of partition date was the same as input information date for JDBC sources.

If the input information date has DATE or DATETIME data type, we can convert it to any literal format we chose internally in Pramen. We can use ISO date format for such cases.

Feature

Make information.date.sql.format option obsolete.