erp5_officejs: fix CodingStyleTest by removing duplicated selection name

12 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed ERP5.CodingStyleTest-Master

01:06:53

passed ERP5.PerformanceTest-Master

00:23:10

failed ERP5.UnitTest-Master

04:22:09

failed ERP5.UnitTest-Master.Medusa

02:46:28

passed SlapOS.Eggs.UnitTest-Master.Python2

00:39:28

passed SlapOS.Eggs.UnitTest-Master.Python3

00:10:16

failed ERP5.UnitTest-Master

02:20:12

failed ERP5.UnitTest-Master

02:34:21

passed SlapOS.Eggs.UnitTest-Master.Python2

00:15:43

passed SlapOS.Eggs.UnitTest-Master.Python2

00:35:28

passed SlapOS.Eggs.UnitTest-Master.Python3

00:30:04

passed SlapOS.Eggs.UnitTest-Master.Python3

00:10:11