Revert "Fix integration tests."
Revert "Fix integration tests."

This reverts commit 6a0462755ad0e1d33a97821d8240c461a5c7b807.

sqlalchemy-redshift/sqlalchemy-redshift,sqlalchemy-redshift/sqlalchemy-redshift,graingert/redshift_sqlalchemy,solackerman/sqlalchemy-redshift,betteroutcomes/sqlalchemy-redshift