slapos_erp5&jio: drop renderjs_oss from slapos_jio

  This code isnt needed anymore.
3 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS-Master.UnitTest-Master

01:56:58

passed SlapOS.Eggs.UnitTest-Master.Python2

00:22:42

passed SlapOS.Eggs.UnitTest-Master.Python3

00:32:12