don't remove keepalive and xmpp ping timeouts when we get an expected stanza.

src/common/xmpp/dispatcher_nb.py

@@ -469,10 +469,6 @@ class XMPPDispatcher(PlugIn):
         # we have released dispatcher, so self._owner has no methods
         if not res:
             return
-        if 'remove_timeout' in self._owner.__dict__:
-            # When we receive data after we started disconnecting, Transport may
-            # already be plugged out
-            self._owner.remove_timeout()
         for (_id, _iq) in self._expected.items():
             if _iq is None:
                 # If the expected Stanza would have arrived, ProcessNonBlocking