Remove EoL CentOS 8 factsets

facts/Vagrantfile

@@ -81,29 +81,6 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
     host.vm.provision 'shell', path: 'get_facts.sh'
     host.vm.provision 'shell', inline: '/sbin/shutdown -h now'
   end
-  config.vm.define 'centos-8-x86_64', autostart: false do |host|
-    host.vm.box = 'centos/8'
-    host.vm.synced_folder '.', '/vagrant'
-    host.vm.provision 'shell', inline: 'dnf -y install wget make gcc net-tools'
-    host.vm.provision 'file', source: 'Gemfile', destination: 'Gemfile'
-    host.vm.provision 'shell', path: 'get_facts.sh'
-    host.vm.provision 'shell', inline: '/sbin/shutdown -h now'
-    host.vbguest.auto_update = true
-  end
-  # images are at https://cloud.centos.org/centos/8-stream/x86_64/images/
-  # (check for version updates periodically)
-  # facts land as centos-8-x86_64.facts
-  config.vm.define 'centos-stream8-x86_64', autostart: false do |host|
-    host.vm.box = 'centos/stream8'
-    host.vm.box_url = 'https://cloud.centos.org/centos/8-stream/x86_64/images/CentOS-Stream-Vagrant-8-20240513.0.x86_64.vagrant-virtualbox.box'
-    host.vm.synced_folder '.', '/vagrant'
-    host.vm.provision 'shell', inline: 'dnf -y install wget make gcc net-tools'
-    host.vm.provision 'file', source: 'Gemfile', destination: 'Gemfile'
-    host.vm.provision 'shell', path: 'get_facts.sh'
-    # commented to allow manual retrieval of facts
-    # host.vm.provision 'shell', inline: '/sbin/shutdown -h now'
-    host.vbguest.auto_update = true
-  end
   # images are at https://cloud.centos.org/centos/9-stream/x86_64/images/
   # can be imported with `vagrant box add --name centos/stream9 $url` you can also
   # use the host.vm.box_url below