Remove vars files for EOL version of centos-8

Change-Id: I57560b416b03afffe7498609490da04d1a851f11

vars/centos-8.3.yml

@@ -1,52 +0,0 @@
----
-# Copyright 2016, Rackspace US, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# NOTE(jrosser) this file is for temporary support of Centos-8 (NOT stream) during the transition to stream
-
-_lxc_hosts_container_build_command: "dnf --assumeyes --installroot=/var/lib/machines/{{ lxc_container_base_name }} install --setopt=install_weak_deps=False --nodocs rootfiles coreutils dnf centos-linux-repos --releasever=8"
-
-_lxc_cache_map:
-  distro: centos
-  arch: "{{ lxc_architecture_mapping.get( ansible_facts['architecture'] ) }}"
-  release: 8
-  copy_from_host:
-    - /etc/default/locale
-    - /etc/environment
-    - /etc/localtime
-    - /etc/locale.conf
-    - /etc/protocols
-    - /etc/pki/rpm-gpg/
-    - /etc/yum/pluginconf.d/fastestmirror.conf
-    - /etc/yum.repos.d/
-
-_lxc_cache_prep_template: "prep-scripts/centos_8_prep.sh.j2"
-
-_lxc_cache_distro_packages:
-  - ca-certificates
-  - iputils
-  - iproute
-  - openssh-server
-  - policycoreutils
-  - procps
-  - python3
-  - python3-libs
-  - rsync              # os_keystone runs serial=1 and uses rsync before the distro packages have been installed on all keystone targets
-  - setup
-  - sudo
-  - systemd
-  - systemd-networkd
-  - systemd-resolvd
-  - systemd-sysv
-  - tzdata

vars/centos-8.4.yml

@@ -1 +0,0 @@
-centos-8.3.yml

vars/centos-8.5.yml

@@ -1 +0,0 @@
-centos-8.3.yml