Remove feature flag: disability_526_max_cfi_service_switch

[dfitchett]

Note: Delete the description statements, complete each step. None are optional, but can be justified as to why they cannot be completed as written. Provide known gaps to testing that may raise the risk of merging to production.

Summary

• This work is behind a feature toggle (flipper): NO
• Removes the feature flag disability_526_max_cfi_service_switch. Code references were removed by the PR:
  • Remove max ratings api switch ff #21036

Related issue(s)

• Remove the max ratings api switch feature flag abd-vro#4164

Testing done

Tests updated in referenced PR above

What areas of the site does it impact?

None

Acceptance criteria

• I fixed|updated|added unit tests and integration tests for each feature (if applicable).
• No error nor warning in the console.
• Events are being sent to the appropriate logging solution
• Documentation has been updated (link to documentation)
• No sensitive information (i.e. PII/credentials/internal URLs/etc.) is captured in logging, hardcoded, or specs
• Feature/bug has a monitor built into Datadog (if applicable)
• If app impacted requires authentication, did you login to a local build and verify all authenticated routes work as expected
• I added a screenshot of the developed feature

Requested Feedback

(OPTIONAL)What should the reviewers know in addition to the above. Is there anything specific you wish the reviewer to assist with. Do you have any concerns with this PR, why?

[asiisii]

LGTM🚀