Schema includes fields that are not selected for sync

[dobesv]

The tap outputs a schema that includes fields that are not selected in the catalog. This has a couple of unwanted effects:

1. If the target cares about the schema (MySQL, BigQuery, Parquet, etc.) this will result in the creation of columns that will never have a value set in them
2. If the target doesn't support some type output by the stripe tap, disabling that field cannot be used to avoid an error in the target. For example, SQL doesn't really allow a field to be a string OR an object, but the Stripe schema includes fields with that type. Sending the Stripe schema to such a target results in an error that is not easy to remedy.