Old SAML identity providers links are still showing up in the TAS login page when logging on to the Apps Manager. These old SAML identity providers were previously configured but have been removed or replaced since.
VMware Tanzu Platform - Cloud Foundry
The old identity providers are still in UAA even though the TAS settings no longer have them.
uaac curl /identity-providers
uaac curl /identity-providers/xxx-yyy-zzz
uaac curl /identity-providers/xxx-yyy-zzz -X DELETE