Remove flaky tests

[zangell44]

Removes flaky test cases. See #11124 and #11123.

Checklist

• This pull request references any related issue by including "closes <link to issue>"
  • If no issue exists and your change is not a small fix, please create an issue first.
• This pull request includes tests or only affects documentation.
• This pull request includes a label categorizing the change e.g. fix, feature, enhancement, docs.

For documentation changes:

• This pull request includes redirect settings in netlify.toml for files that are removed or renamed

[netlify]

✅ Deploy Preview for prefect-docs-preview ready!

Name	Link
🔨 Latest commit	22cb4b1
🔍 Latest deploy log	https://app.netlify.com/sites/prefect-docs-preview/deploys/654afd1536c1c2000808f387
😎 Deploy Preview	https://deploy-preview-11125--prefect-docs-preview.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.