Remove old authorization plugins that are little used and will break …

…very soon

data/plugins/authorization_plugins.yml

@@ -48,13 +48,6 @@
  author_name: Svetlin Zamfirov
  releases_url: https://github.com/szamfirov/gocd-okta-oauth-authorization-plugin/releases/latest
 
-- name: TLS Client Certificate Authentication plugin
- description: Using headers set by a TLS-terminating reverse proxy, details from a client certificate are used to log in
- readmore_url: https://github.com/cnorthwood/gocd-tls-auth
- author_url: https://cjn.me.uk/
- author_name: Chris Northwood
- releases_url: https://github.com/cnorthwood/gocd-tls-auth/releases/latest
-
 - name: GitLab OAuth authorization plugin
  description: The plugin allows user to login in GoCD using GitLab or GitLab Enterprise.
  readmore_url: https://github.com/gocd-contrib/gitlab-oauth-authorization-plugin
@@ -75,11 +68,3 @@
  author_url: https://github.com/klinux
  author_name: Kleber Rocha
  releases_url: https://github.com/klinux/gocd-keycloak-oauth-authorization-plugin/releases/latest
-
-- name: Atlassian Crowd Authentication Plugin
- description: Delegates authentication services to Atlassian Crowd
- readmore_url: https://github.com/mgambini/crowd-integration-plugin
- author_url: https://github.com/mgambini
- author_name: Di.Tech S.p.A.
- releases_url: https://github.com/mgambini/crowd-integration-plugin/releases/latest
- contact_url: mailto:marco.gambini@ditechspa.it?subject=Info about Crowd Authentication Plugin