It seems that Scylla has more values returned by DeleteTable operation than DynamoDB.
In this patch I added a table status check when generating output.
If we delete the table, values KeySchema, AttributeDefinitions and CreationDateTime won't be returned.
The test has also been modified to check that these attributes are not returned.
Fixes scylladb#14132
Closesscylladb/scylladb#15707