BREAKING CHANGE: AdfsFarmNode: Remove Ensure Parameter

[X-Guardian]

Pull Request (PR) description

This PR removes the Ensure parameter from the AdfsFarmNode resource as the Remove-AdfsFarmNode cmdlet that it uses is deprecated.

This Pull Request (PR) fixes the following issues

• Fixes #36

Task list

• [x] Added an entry under the Unreleased section in the CHANGELOG.md. Entry should say what was changed, and how that affects users (if applicable).
• [ ] Resource documentation added/updated in resource directory README.md.
• [x] Resource parameter descriptions added/updated in schema.mof and comment-based help.
• [x] Comment-based help added/updated.
• [x] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [x] Unit tests added/updated. See DSC Resource Testing Guidelines.
• [ ] Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• [x] New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

---

This change is 

[codecov[bot]]

Codecov Report

Merging #37 into dev will decrease coverage by 0.02%. The diff coverage is 100%.

@@            Coverage Diff            @@
##             dev      #37      +/-   ##
=========================================
- Coverage   98.3%   98.28%   -0.03%     
=========================================
  Files         16       16              
  Lines       2129     2100      -29     
=========================================
- Hits        2093     2064      -29     
  Misses        36       36

Impacted Files	Coverage Δ
...Resources/MSFT_AdfsFarmNode/MSFT_AdfsFarmNode.psm1	100% <100%> (ø)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update f8cd456...e930536. Read the comment docs.