docs: remove note about firefox not supporting ESM imports in Web Workers (#13940)

Author: DCzajkowski

docs/guide/features.md

@@ -559,7 +559,7 @@ import MyWorker from './worker?worker'
 const worker = new MyWorker()
 ```
 
-The worker script can also use ESM `import` statements instead of `importScripts()`. **Note**: During dev this relies on [browser native support](https://caniuse.com/?search=module%20worker) (currently not supported in Firefox), but for the production build it is compiled away.
+The worker script can also use ESM `import` statements instead of `importScripts()`. **Note**: During dev this relies on [browser native support](https://caniuse.com/?search=module%20worker), but for the production build it is compiled away.
 
 By default, the worker script will be emitted as a separate chunk in the production build. If you wish to inline the worker as base64 strings, add the `inline` query: