There are a few files in which there are leftover imports that are not needed anymore:
PGDataypeFeatureTest
PgadminPage
CheckForXssFeatureTest
CheckDebuggerForXssFeatureTest
We also noticed that there were quite a few time.sleep functions that were removed. This seems great overall, but we think that some of them were in place because of varying network and computer speeds. So for example, in QueryToolFeatureTest, there is an ajax call that was followed by a time.sleep to ensure that it had finished executing before continuing to execute. Removing this may reintroduce some flakiness. If there are no issues with flakiness after this patch, it seems like a great idea. We ran the tests a few times and didn't notice any flakiness, but we're unsure if it will be a problem on a different system.