Update Get-ADServiceAccount.md

[HerbertMauerer]

forgot to completely remove all LDS references in previous PR. Note there is a hint that this cmdlet does not work for LDS anyway. we can keep this for clarification.

PR Summary

PR Checklist

• [ ] Descriptive Title: Remove all LDS references
• [ ] Summary: This cmdlet does not work for LDS anyway.
• [ ] Contributor's Guide: I have read the contributors guide.
• [ ] Style: This PR adheres to the style guide.

[learn-build-service-prod[bot]]

Learn Build status updates of commit efb661b:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
docset/winserver2022-ps/activedirectory/Get-ADServiceAccount.md	:white_check_mark:Succeeded	View (WindowsServer2022-ps)

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