grid: cleanup the duplicate supervisord processes

After 1.6.1 was deployed we have two processes, stop the redundant process.
7 jobs for fix/supervisor_socket_path_change in 0 seconds (queued for 36 seconds)
Status Job ID Name Coverage
  External
passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:48:13

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:25:17

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:36:11

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:30:29

created SlapOS.Eggs.UnitTest-Jerome.Python3
passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:20:20

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:31:18