Update toc.yml

Author: genlin

support/entra/entra-id/toc.yml

@@ -78,7 +78,6 @@
         href: app-integration/send-notification-details.md
   - name: Troubleshoot sign-in to apps
     items:
-      - name: Error AADSTS220501 - Unable to download Certificate Revocation List
       - name: Error code AADSTS50173 - The provided grant has expired due to it being revoked
         href: app-integration/error-code-aadsts50173-grant-expired-revoked.md
       - name: Error AADSTS220501 - Unable to download Certificate Revocation List