Yes, you can.  Simply go to the test management window to get a list of all test types available (See the instructional video on Test Management).  

Select the test type you want to remove and click on the Edit Test button.  Now check the archive checkbox.  The same procedure applies to render available a previously archived test type.

This feature is not available in the web viewer.
Audiqueen's web viewer inherits the settings defined in Audiqueen's Workstations.