Comment 3 for bug 1820283

Reviewed: https://review.openstack.org/643613
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=18c40cacc13d76bf8199d61cac6ecc2af3122c8f
Submitter: Zuul
Branch: master

commit 18c40cacc13d76bf8199d61cac6ecc2af3122c8f
Author: Matt Riedemann <email address hidden>
Date: Fri Mar 15 11:39:33 2019 -0400

    Remove stale aggregates notes from scheduler evolution doc

    Since I901184cb1a4b6eb0d6fa6363bc6ffbcaa0c9d21d in Kilo the
    aggregates information about a HostState object (which is a
    wrapper over a ComputeNode) is cached in the scheduler, so the
    comments in the scheduler evolution doc about not accessing the
    aggregates table in the DB from filters/weighers and such is
    extremely out of date and should just be removed.

    Change-Id: Ibcbad227813d3b37b4e314eddbf3bae6e85652ea
    Related-Bug: #1820283