feat: cleanup old repo management

- change profiles::puppet::agent to require Yumrepo['puppet']
- remove managed repos hieradata
- remove profiles::yum::* classes that are not required
- remove missed rebase comment

site/profiles/manifests/puppet/agent.pp

@@ -19,7 +19,7 @@ class profiles::puppet::agent (
       # Ensure the puppet-agent package is installed and locked to a specific version
       package { 'puppet-agent':
         ensure  => $puppet_version,
-        require => Class['profiles::yum::puppet7'],
+        require => Yumrepo['puppet'],
       }
 
       # versionlock puppet-agent