task(settings): Disable fetching of nimbus-experiments

[dschom]

Because

• We don't want to fetch experiments right now.

This pull request

• Comments out code that fetches experiments

Issue that this pull request solves

Closes: (issue number)

Checklist

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• My commit is GPG signed.
• If applicable, I have modified or added tests which pass locally.
• I have added necessary documentation (if appropriate).
• I have verified that my changes render correctly in RTL (if appropriate).

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Other information (Optional)

This was arleady done in one spot in content server. This second location was overlooked. We currently don't want to fetch experiments because we were observering slow response times. The nimbus team is working on creating dedicated infra for this so we don't have proxy through content server. Until then, we will disable this code.