Deprecate babel/quotes since it's fixed in ESLint 5

[edmorley]

Hi!

The babel/quotes rule references the upstream ESLint issue that it is meant to fix, here:

eslint-plugin-babel/rules/quotes.js

Lines 10 to 14 in e565670

	// Workaround for JSX fragment syntax until
	// https://github.com/eslint/eslint/issues/9662
	if (problem.node.parent.type === "JSXFragment") {
	return false;
	}

Looking at eslint/eslint#9662, it has been fixed by eslint/eslint#9664, which is included in ESLint 5.0.

As such, I believe the babel/quotes rule can now be deprecated.

[kaicataldo]

Thank you for the issue. Now that @babel/eslint-plugin has been released, we are making this repository read-only. If this is a change you would still like to advocate for, please reopen this in the babel/babel monorepo.