Revert "Prevent the "import/no-duplicates" warning for the externaliz…

…ation process"

This reverts commit 2d0e0d6.

.eslintrc.js

@@ -43,15 +43,6 @@ module.exports = {
 				additionalHooks: 'useSelect',
 			},
 		],
-		// When a file imports from both `@wordpress/components` and `extracted/@wordpress/components`
-		// at the same time, it would get the "no-duplicates" warning. It should be considered a
-		// false positive when working on the externalization process. So here we temporarily change
-		// to use "no-duplicate-imports" instead.
-		//
-		// TODO: After the externalizations of `@wordpress/*` and `@woocommerce/*` are complete,
-		//       remove the following two lines of rule settings.
-		'import/no-duplicates': 'off',
-		'no-duplicate-imports': 'warn',
 	},
 	overrides: [
 		{