If you no longer use this platform as the IdP, you can remove it from AOC by running the following command:
./tacli -e "https://example.com" -u "username"-p "password" saml delete-idp -eid "entityIdOfSamlIdp"
Replace entityIdOfSamlIdp with the entityId of your IdP, which can be queried by running the following command:
./tacli -e "https://example.com" -u "username" -p "password" saml list-idp