Remove unused virt.disk.api methods bind/unbind

[Nathanael Burton]

The following methods were only used by the old LXC attach/detach volume code which was removed in https://review.openstack.org/17861 (commit b8831091a8d097bb55a0e65c3af254a8bfa88811). Remove them.

in nova.virt.disk.api:

- bind()
- unbind()

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/24590

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/24590
Committed: http://github.com/openstack/nova/commit/dc3eb8e30d22085e8bad377f260f32ccde301933
Submitter: Jenkins
Branch: master

commit dc3eb8e30d22085e8bad377f260f32ccde301933
Author: mathrock <email address hidden>
Date: Sun Mar 17 01:26:53 2013 -0400

    Remove unused virt.disk.api methods bind/unbind

    The bind and unbind methods were only used by the old LXC
    attach/detach volume code which was removed in
    https://review.openstack.org/17861 (commit
    b8831091a8d097bb55a0e65c3af254a8bfa88811). Remove them.

    Fixes bug 1156127

    Change-Id: I37b0344970415fe93faabd955b4b4db88de269db