Remove 'nova-xvpvncproxy'

This legacy service is no longer used and was deprecated during the
Stein cycle [1]. It's time to say adios and remove them in their
entirety. This is pretty straightforward, with the sole exception of
schema for the 'remote-consoles' API, which has to continue supporting
requests for type 'xvpvnc' even if we can't fulfil those requests now.

[1] https://review.opendev.org/#/c/610076/

Part of blueprint remove-xvpvncproxy

Depends-On: https://review.opendev.org/695853
Change-Id: I2f7f2379d0cd54e4d0a91008ddb44858cfc5a4cf
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>

doc/source/cli/index.rst

@@ -75,14 +75,3 @@ are documented for completeness and debugging if something goes wrong.
    :maxdepth: 1
 
    nova-rootwrap
-
-Deprecated Services
--------------------
-
-The following services are deprecated in nova. They should not be used in new
-deployments, but are documented for existing ones.
-
-.. toctree::
-   :maxdepth: 1
-
-   nova-xvpvncproxy

doc/source/cli/nova-xvpvncproxy.rst

@@ -1,54 +0,0 @@
-================
-nova-xvpvncproxy
-================
-
-----------------------------
-XVP VNC Console Proxy Server
-----------------------------
-
-:Author: openstack@lists.openstack.org
-:Copyright: OpenStack Foundation
-:Manual section: 1
-:Manual group: cloud computing
-
-Synopsis
-========
-
-::
-
-  nova-xvpvncproxy  [options]
-
-Description
-===========
-
-:program:`nova-xvpvncproxy` is a server daemon that serves the Nova XVP VNC
-Console Proxy service, which provides an XVP-based VNC Console Proxy for use
-with the Xen hypervisor.
-
-.. deprecated:: 19.0.0
-
-   :program:`nova-xvpvnxproxy` is deprecated since 19.0.0 (Stein) and will be
-   removed in an upcoming release.
-
-Options
-=======
-
-**General options**
-
-Files
-=====
-
-* ``/etc/nova/nova.conf``
-* ``/etc/nova/policy.json``
-* ``/etc/nova/rootwrap.conf``
-* ``/etc/nova/rootwrap.d/``
-
-See Also
-========
-
-* :nova-doc:`OpenStack Nova <>`
-
-Bugs
-====
-
-* Nova bugs are managed at `Launchpad <https://bugs.launchpad.net/nova>`__