Remove Fedora platform jobs from Zed branch

These jobs are not intended to run on stable branches; remove them
to avoid issues with updating the nodeset on the master branch:

- devstack-platform-fedora-latest
- devstack-platform-fedora-latest-virt-preview

Change-Id: I4044c20765ad96fb5304d145b2c18be9736de7f3

.zuul.yaml

@@ -78,16 +78,6 @@
         nodes:
           - controller
 
-- nodeset:
-    name: devstack-single-node-fedora-latest
-    nodes:
-      - name: controller
-        label: fedora-35
-    groups:
-      - name: tempest
-        nodes:
-          - controller
-
 - nodeset:
     name: devstack-single-node-debian-bullseye
     nodes:
@@ -744,30 +734,6 @@
       devstack_services:
         tls-proxy: false
 
-- job:
-    name: devstack-platform-fedora-latest
-    parent: tempest-full-py3
-    description: Fedora latest platform test
-    nodeset: devstack-single-node-fedora-latest
-    voting: false
-    vars:
-      configure_swap_size: 4096
-      # Python 3.10 dependency issues; see
-      # https://bugs.launchpad.net/horizon/+bug/1960204
-      devstack_services:
-        horizon: false
-
-- job:
-    name: devstack-platform-fedora-latest-virt-preview
-    parent: tempest-full-py3
-    description: Fedora latest platform test using the virt-preview repo.
-    nodeset: devstack-single-node-fedora-latest
-    voting: false
-    vars:
-      configure_swap_size: 4096
-      devstack_localrc:
-        ENABLE_FEDORA_VIRT_PREVIEW_REPO: true
-
 - job:
     name: devstack-tox-base
     parent: devstack
@@ -841,7 +807,6 @@
         - devstack
         - devstack-ipv6
         - devstack-enforce-scope
-        - devstack-platform-fedora-latest
         - devstack-platform-centos-9-stream
         - devstack-platform-debian-bullseye
         - devstack-platform-ubuntu-jammy
@@ -942,10 +907,6 @@
     #    Next cycle we can remove this if everything run out stable enough.
     # * nova-multi-cell: maintained by nova and currently non-voting in the
     #    check queue for nova changes but relies on devstack configuration
-    # * devstack-platform-fedora-latest-virt-preview: Maintained by lyarwood
-    #    for Nova to allow early testing of the latest versions of Libvirt and
-    #    QEMU. Should only graduate out of experimental if it ever moves into
-    #    the check queue for Nova.
 
     experimental:
       jobs:
@@ -974,7 +935,6 @@
             irrelevant-files:
               - ^.*\.rst$
               - ^doc/.*$
-        - devstack-platform-fedora-latest-virt-preview
         - devstack-no-tls-proxy
     periodic:
       jobs: