Update src/rules/extensions.js

Co-authored-by: Jordan Harband <ljharb@gmail.com>

Author: stephenjason89

src/rules/extensions.js

@@ -94,7 +94,6 @@ module.exports = {
     type: 'problem',
     docs: {
       description: 'Enforce that import statements either always include or never include allowed file extensions.',
-      category: 'Static Analysis',
       recommended: false,
       url: docsUrl('extensions'),
     },