[5.x]: Left behind redactor references

What happened?

Description

We've fully migrated a craft 4 to 5 site. Redactor fields have all been converted to CKEditor. There are no redactor fields anywhere in the site. Searching the yaml files I still see references to craft/redactor/field

No problems exist that I can see. There are no errors, and all of the fields seem to work correctly so this issue has no symptoms other than the weird Yaml references. Why are they still there? Redactor has been uninstalled.

Steps to reproduce

1. Migrate to craft 5 from 4.
2. Migrate Redactor to CK
3. Remove all redactor fields
4. Uninstall Redactor
5. Search Yaml files for "craft\redactor\Field"

Expected behavior

No references to redactor in Yaml config

Actual behavior

Lots of references in Yaml config.

Craft CMS version

5.8.16

PHP version

No response

Operating system and version

Servd

Database type and version

No response

Image driver and version

No response

Installed plugins and versions

Start by reproducing the Craft 4-to-5 migration described in the issue, including Redactor-to-CKEditor migration and Redactor removal. Search the resulting YAML configuration for "craft\redactor\Field" and compare the references with the installed fields; done means determining why they remain and confirming whether the configuration is cleaned up without errors.