Update tier badges for Authentication page

Add and remove needed tier badges for documentation page.

doc/topics/authentication/index.md

@@ -4,7 +4,7 @@ group: Access
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
-# Authentication
+# Authentication **(FREE)**
 This page gathers all the resources for the topic **Authentication** within GitLab.
@@ -33,15 +33,15 @@ This page gathers all the resources for the topic **Authentication** within GitL
   - [Atlassian Crowd OmniAuth Provider](../../administration/auth/crowd.md)
   - [CAS OmniAuth Provider](../../integration/cas.md)
   - [SAML OmniAuth Provider](../../integration/saml.md)
-  - [SAML for GitLab.com Groups](../../user/group/saml_sso/index.md) **(PREMIUM SAAS)**
-  - [SCIM user provisioning for GitLab.com Groups](../../user/group/saml_sso/scim_setup.md) **(PREMIUM SAAS)**
-  - [Kerberos integration (GitLab EE)](../../integration/kerberos.md) **(STARTER)**
+  - [SAML for GitLab.com Groups](../../user/group/saml_sso/index.md)
+  - [SCIM user provisioning for GitLab.com Groups](../../user/group/saml_sso/scim_setup.md)
+  - [Kerberos integration (GitLab EE)](../../integration/kerberos.md)
 ## API
 - [OAuth 2 Tokens](../../api/README.md#oauth2-tokens)
 - [Personal access tokens](../../api/README.md#personalproject-access-tokens)
-- [Project access tokens](../../api/README.md#personalproject-access-tokens) **(FREE SELF)**
+- [Project access tokens](../../api/README.md#personalproject-access-tokens)
 - [Impersonation tokens](../../api/README.md#impersonation-tokens)
 - [GitLab as an OAuth2 provider](../../api/oauth2.md#gitlab-as-an-oauth2-provider)
@@ -53,4 +53,4 @@ This page gathers all the resources for the topic **Authentication** within GitL
 - [Jenkins GitLab OAuth Plugin](https://wiki.jenkins.io/display/JENKINS/GitLab+OAuth+Plugin)
 - [OKD - Configuring Authentication and User Agent](https://docs.okd.io/3.11/install_config/configuring_authentication.html#GitLab)
-<!-- vale gitlab.Spelling = YES -->
\ No newline at end of file
+<!-- vale gitlab.Spelling = YES -->