Base: remove getWorkflowInfo

It currently not used and it's better not to have such public method

product/ERP5Type/Base.py

@@ -2881,14 +2881,6 @@ class Base(
       result += [(wf.getId(), wf._getWorkflowStateOf(self, id_only=1))]
     return result
 
-  security.declarePublic('getWorkflowInfo')
-  def getWorkflowInfo(self, name='state', wf_id=None):
-    """
-      Returns a list of tuples {id:workflow_id, state:workflow_state}
-    """
-    portal_workflow = self.portal_workflow
-    return portal_workflow.getInfoFor(self, name, wf_id=wf_id)
-
   # Hide Acquisition to prevent loops (ex. in cells)
   # Another approach is to use XMLObject everywhere
   # DIRTY TRICK XXX