Comment 8 for bug 1738246

Reviewed: https://review.openstack.org/575126
Committed: https://git.openstack.org/cgit/openstack/networking-odl/commit/?id=0ffa67285b9aac89d1d7249f5a95a408f3a0dba6
Submitter: Zuul
Branch: stable/queens

commit 0ffa67285b9aac89d1d7249f5a95a408f3a0dba6
Author: Mike Kolesnik <email address hidden>
Date: Mon May 28 16:51:38 2018 +0300

    Cleanup l3_odl_v2 code

    Some cleanup in preparation for fixing bug #1738246:
     * Remove session.begin code since it doesn't actually do anything.
     * Simplify dependency list construction in delete_floatingip
     * Remove comment from rcurran since it's already handled
     * Remove get_floatingip mocking from tests set up since it doesn't do
       anything but will interfere with any proper testing (next patch).

    Change-Id: I6e718d3943a0c958d6717ba242c069a855e07c83
    Partial-Bug: #1738246
    (cherry picked from commit 8c5551f2ba57a035090be1ac00f73a397d274a9e)