Missing converter: no-unused-variable

[JoshuaKGoldberg]

💥 Missing Converter

• tslint-to-eslint-config version: 0.6.0
• typescript-eslint version: 2.29.0

TSLint Rule Name

one-line

See #401 for a reproduction.

The typescript-eslint roadmap indicates @typescript-eslint/no-unused-vars is the ESLint rule to convert to.

Note: that rule has a pretty big caveat in its README.md. There should be a notice in the converter for no-unused-variable that indicates to read the article.

[KingDarBoja]

That's a long article to read indeed but doesn't seem easy to digest for most users. About the caveat, seems fair to do as this is only turn off the ESLint rule.