What does this PR do?

Reverts #9577

Motivation

We are bumping psutil to 5.9.0, which includes giampaolo/psutil#2000.

Additional Notes

This needs DataDog/integrations-core#11139. Since we fetch from integrations-core master, PRs that don't have this change will fail until the rebase/merge main.

Describe how to test/QA your changes

Test that the fix applied in #9577 still works.

Reviewer's Checklist

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