Comment 1 for bug 1580082

Reviewed: https://review.openstack.org/320283
Committed: https://git.openstack.org/cgit/openstack/dragonflow/commit/?id=a40352ad78f7094b45e0029db3a911bd33d4cf89
Submitter: Jenkins
Branch: master

commit a40352ad78f7094b45e0029db3a911bd33d4cf89
Author: yuanwei <email address hidden>
Date: Tue May 24 16:06:39 2016 +0800

    Delete callback function to port status events

    For ovsdb monitor module has already been merged, DF controller doesn't
    need to responsed to the port status events. Keep remaining this callback
    function will cause apps be notified duplicately local port delete event.
    Besides, if a port isn't online on south, the local controller shouldn't
    save this lport's information in its cache.

    Change-Id: I9a2ebd0d3a751291ea4eb788b877723d44399a5a
    Closes-Bug: #1580082