Remove orphaned legacy AKV sample reference from MS Docs

[paulmedynski]

The file doc/samples/AzureKeyVaultProviderLegacyExample_2_0.cs has been deleted as of #4323 (it was already commented out and marked TODO for removal).

The MS Docs page still shows this legacy sample inline:
https://learn.microsoft.com/en-us/sql/connect/ado-net/sql/azure-key-vault-example?view=sql-server-ver17#legacy-callback-implementation-design-example-with-v20

Action needed: Request removal of the "Legacy callback implementation design example with v2.0+" section from the MS Docs page (in the MicrosoftDocs/sql-docs repo), as the API it demonstrates is no longer supported.

The modern replacement sample is doc/samples/AzureKeyVaultProviderExample_2_0.cs which uses Azure.Identity (TokenCredential-based).

[github-actions]

🔍 Triage Summary

Check	Result
Issue type	Task
Environment	N/A — no environment details required for a documentation/cleanup task
Area	Area\Documentation
Duplicates	None found
Regression	Not indicated

Analysis

This issue tracks cleanup of an orphaned legacy AKV sample reference in the MS Docs page for Azure Key Vault provider. The local file doc/samples/AzureKeyVaultProviderLegacyExample_2_0.cs has already been removed from this repo, but the corresponding MS Docs page (MicrosoftDocs/sql-docs) still references the legacy v2.0 callback-based API which is no longer supported. The modern replacement (AzureKeyVaultProviderExample_2_0.cs using Azure.Identity / TokenCredential) is already in place. Severity is P3 — no functional impact, docs-only cleanup.

Next Steps

• Open a PR or issue in the MicrosoftDocs/sql-docs repository to remove the "Legacy callback implementation design example with v2.0+" section from the [Azure Key Vault example page]((learn.microsoft.com/redacted)
• Verify no other MS Docs pages reference the deleted AzureKeyVaultProviderLegacyExample_2_0.cs file.
• Once the MS Docs change is merged, close this issue with a reference to the sql-docs PR.

Note: This triage summary is auto-generated by an AI agent. The analysis and suggestions above have not been verified by a human maintainer. Please treat as preliminary guidance only.

Generated by SqlClient Issue Auto-Triage for issue #4322 · ● 1.5M · ◷