[OVN] Remove "FIPAddDeleteEvent" event

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/864000

Change abandoned by "Slawek Kaplonski <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/864000
Reason: This review is > 4 weeks without comment, and failed Zuul jobs the last time it was checked. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and leaving a 'recheck' comment to get fresh test results.

I removed event and mac binding deletion, but seems bug still exist or me doing something wrong. Functional tests running using ovn version OVN_BRANCH:-v21.06.0 , but when creating floating ip or deleting the MAC_Binding entry is not deleted

Failing test: https://opendev.org/openstack/neutron/src/branch/master/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovsdb_monitor.py#L163

Output:
Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 182, in func
    return f(self, *args, **kwargs)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/functional/plugins/ml2/drivers/ovn/mech_driver/ovsdb/test_ovsdb_monitor.py", line 192, in test_floatingip_mac_bindings
    n_utils.wait_until_true(
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 750, in wait_until_true
    raise WaitTimeout(_("Timed out after %d seconds") % timeout)
neutron.common.utils.WaitTimeout: Timed out after 15 seconds

Where can I look to resolve bug?

I'll open a bug to OVN to confirm that the bug is still present or that we implemented the wrong check.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2172066

Change abandoned by "Slawek Kaplonski <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/864000
Reason: This review is > 4 weeks without comment, and failed Zuul jobs the last time it was checked. We are abandoning this for now. Feel free to reactivate the review by pressing the restore button and leaving a 'recheck' comment to get fresh test results.