Revert "Give systemctl poweroff --force the sudoer permission to fix ubuntu24 self termination issue (#2959)"

[gmarciani]

Description of changes

This reverts commit cc2aeb2.
We verified that this fix does not solve the issue. even if compute node uses the systemctl poweroff --force with the sudo permissions, there are still cases where the compute node with broken network interface is unable to self terminate.

This bug fix was a nice to have for the patch release, so better to revert.

Tests

• schedulers.test_slurm.test_error_handling failed due to compute node being stuck in self termination.

References

• Link to impacted open issues.
• Link to related PRs in other packages (i.e. cookbook, node).
• Link to documentation useful to understand the changes.

Checklist

• Make sure you are pointing to the right branch.
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.50%. Comparing base (98c689e) to head (84bceee).
Report is 32 commits behind head on release-3.13.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-3.13    #2964   +/-   ##
=============================================
  Coverage         75.50%   75.50%           
=============================================
  Files                23       23           
  Lines              2356     2356           
=============================================
  Hits               1779     1779           
  Misses              577      577           

Flag	Coverage Δ
unittests	75.50% <ø> (ø)

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