Remove TODO

Author: shockey

test/specmap/all-of.js

@@ -336,7 +336,6 @@ describe('allOf', function () {
     })
   })
 
-  // TODO: this needs to get fixed
   it('should handle case, with an `allOf` referencing an `allOf` ', function () {
     return mapSpec({
       plugins: [plugins.refs, plugins.allOf],