`no-unused-disable` doesn't work with flat config

[teppeis]

This rule is implemented by patching Linter, which seems to be causing this problem with new flat config.

The flat config allows reportUnusedDisableDirectives to be included in shareable config.
The new RFC will also allow for more configuration flexibility (in ESLint v9 ?).

• feat!: flexible config + default reporting of unused disable directives eslint/rfcs#100

So it would be good to make this rule deprecated in the future.

original: mysticatea#79

[ota-meshi]

Thank you for posting the issue.
As you say, I think no-unused-disable should be deprecated.
I also think no-unused-enable can also be deprecated since the following PR was merged:
eslint/eslint#17611

[teppeis]

reportUnusedDisableDirectives:error released in v8.56.0 🚀

[github-actions]

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[CruseCtrl]

I think no-unused-disable should be deprecated

I've created #249 for this