ci: remove CentOS Stream 8 test (EOL)

Signed-off-by: Adrian Reber <areber@redhat.com>

.cirrus.yml

@@ -92,37 +92,6 @@ task:
   build_script: |
     make -C scripts/ci vagrant-fedora-non-root
 
-task:
-  name: CentOS Stream 8 based test
-  environment:
-    HOME: "/root"
-    CIRRUS_WORKING_DIR: "/tmp/criu"
-
-  compute_engine_instance:
-    image_project: centos-cloud
-    image: family/centos-stream-8
-    platform: linux
-    cpu: 4
-    memory: 8G
-
-  setup_script: |
-    ln -sf /usr/include/google/protobuf/descriptor.proto images/google/protobuf/descriptor.proto
-    # Do not fail if latest epel repository definition is already installed
-    yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm || :
-    yum install -y dnf-plugins-core
-    yum config-manager --set-enabled powertools
-    yum install -y --allowerasing asciidoc gcc git gnutls-devel libaio-devel libasan libcap-devel libnet-devel libnl3-devel libbsd-devel libselinux-devel make protobuf-c-devel protobuf-devel python3-devel python3-PyYAML python3-protobuf python3-importlib-metadata python3-junit_xml xmlto libdrm-devel
-    alternatives --set python /usr/bin/python3
-    systemctl stop sssd
-    # Even with selinux in permissive mode the selinux tests will be executed
-    # The Cirrus CI user runs as a service from selinux point of view and is
-    # much more restricted than a normal shell (system_u:system_r:unconfined_service_t:s0)
-    # The test case above (vagrant-fedora-no-vdso) should run selinux tests in enforcing mode
-    setenforce 0
-
-  build_script: |
-    make -C scripts/ci local SKIP_CI_PREP=1 CC=gcc CD_TO_TOP=1 ZDTM_OPTS="-x zdtm/static/socket-raw"
-
 task:
   name: aarch64 build GCC (native)
   arm_container: