There is a Fit columns to width check box as an option for the table that removes the empty column. However, note that manually resizing the table can override this setting.
This option is also available in SAS Visual Analytics 7.5, which runs on SAS 9.4_M6.
Good news: We've extended SAS Hackathon registration until Sept. 12, so you still have time to be part of our biggest event yet – our five-year anniversary!