Remove eslint-plugin-no-only-tests in favour of @vitest/eslint-plugin's no-focused-tests rule #863

Clear and concise description of the problem

no-only-tests is the only rule that eslint-plugin-no-only-tests provides.

Having a dependency just for a single rule seems unnecessary when the vitest eslint plugin provides one with the same functionality.

Suggested solution

Remove dependency on eslint-plugin-no-only-tests and add the vitest equivalent to the test config. Set it's fixable param to false to preserve it's current functionality:

'test/no-focused-tests': ['error', { fixable: false }],

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.