Remove this XXX, clarify node states is in TODO list.

git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@1061 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/handler.py

@@ -86,7 +86,6 @@ class EventHandler(object):
         """Called when a packet is received."""
         self.dispatch(conn, packet)
 
-    # XXX: what's the purpose of this method ?
     def peerBroken(self, conn):
         """Called when a peer is broken."""
         logging.error('%s:%d is broken', *(conn.getAddress()))