CMFActivity: Drop no-op registerActivityBuffer API.

product/CMFActivity/Activity/Queue.py

@@ -235,9 +235,6 @@ class Queue(object):
     raise NotImplementedError
 
   # Registration Management
-  def registerActivityBuffer(self, activity_buffer):
-    pass
-
   def isMessageRegistered(self, activity_buffer, activity_tool, m):
     # BBB: deprecated
     message_list = activity_buffer.getMessageList(self)

product/CMFActivity/ActivityBuffer.py

@@ -60,20 +60,6 @@ class ActivityBuffer(TM):
       transaction.get().addBeforeCommitHook(self._prepare, self._prepare_args)
       self._prepare_args = None
 
-  # Keeps a list of messages to add and remove
-  # at end of transaction
-  def _begin(self):
-    # LOG('ActivityBuffer', 0, '_begin %r' % (self,))
-    from ActivityTool import activity_dict
-    try:
-      # Reset registration for each transaction.
-      for activity in activity_dict.itervalues():
-        activity.registerActivityBuffer(self)
-    except:
-      LOG('ActivityBuffer', ERROR, "exception during _begin",
-          error=sys.exc_info())
-      raise
-
   _abort = _finish = _clear
 
   def _prepare(self, queued):