exceptions.AlreadyAttached is not used

[Matt Riedemann]

The neutron.common.exceptions.AlreadyAttached exception is not used. It looks like it's replaced by this exception in the nicira plugin:

https://github.com/openstack/neutron/blob/master/neutron/plugins/nicira/common/exceptions.py#L51

Either common.exceptions.AlreadyAttached should be removed or NvpPortAlreadyAttached should extend the common AlreadyAttached exception class.

[Matt Riedemann (mriedem)]

Actually, looks like NvpPortAlreadyAttached isn't even used so probably both exceptions can be removed.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/40976

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/40976
Committed: http://github.com/openstack/neutron/commit/fefad06eabc7fb23ccb3ca1a6093d3460065adc7
Submitter: Jenkins
Branch: master

commit fefad06eabc7fb23ccb3ca1a6093d3460065adc7
Author: Matt Riedemann <email address hidden>
Date: Thu Aug 8 14:24:43 2013 -0700

    Remove unused *AlreadyAttached exceptions

    This patch simply removes two exceptions which are not being used.

    Closes-Bug: #1210276

    Change-Id: I5a3412160f49f6e37f3d9182ce4d4a59b1d7bc09