Before You File a Proposal Please Confirm You Have Done The Following...

• I have searched for related issues and found none that match my proposal.
• I have searched the current rule list and found no rules that match my proposal.
• I have read the FAQ and my problem is not listed.

Relevant Package

ast-spec

My proposal is suitable for this project

• I believe my proposal would be useful to the broader TypeScript community (meaning it is not a niche proposal).

Description

Following #8089: we noticed that the IsNullableTypeOptions interface is never actually used in the places it's taken in, such as the isNullableType function later in the file:

We wanted to delete the unused interface, but doing so would be a breaking change. Now that we're working on v8 it's time - let's delete the code! 🔪

Additional Info

Note that the PR for this should be targeted against the v8 branch.

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