slapos_jio_ui_test: Remove set of variation (not required here)

3 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS-Master.UnitTest-Master

01:15:41

passed SlapOS.Eggs.UnitTest-Master.Python2

00:08:09

passed SlapOS.Eggs.UnitTest-Master.Python3

00:15:41