Remove obviously invalid method: they don't even have a "self" parameter !

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28960 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/CMFActivity/ActiveProcess.py

@@ -161,14 +161,6 @@ class ActiveProcess(Base):
       """
       return self.getStartDate()
 
-    def start():
-      # start activities related to this process
-      pass
-
-    def stop():
-      # stop activities related to this process
-      pass
-
     def flush(self):
       # flush  activities related to this process
       activity_tool = getattr(self, 'portal_activities', None)