fix: ignore .d.ts in dist/ for ESLint

[koba04]

I've had the following error while running yarn lint, which is caused by checking .d.ts files in dist/. So I've ignored them.

  0:0  error  Parsing error: "parserOptions.project" has been set for @typescript-eslint/parser.
The file does not match your project config: immutable/dist/src/index.d.ts.
The file must be included in at least one of the projects provided

I've also removed unnecessary ignored targets.

[codesandbox-ci]

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