patches: DCWorkflowGraph is only for legacy DCWorkflow.

And the Product was removed in recent ERP5 SR.
6 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

00:55:39

passed ERP5.PerformanceTest-Master

00:26:52

failed ERP5.UnitTest-Master

01:10:01

failed ERP5.UnitTest-Zope2

05:24:20

passed SlapOS.Eggs.UnitTest-Master.Python2

00:15:31

passed Wendelin.UnitTest-Master

00:36:40