Remove obsolete --experimental-worker flag for test runner

package.json

@@ -4,7 +4,7 @@
   "description": "WIP support for WHATWG Stream in Node",
   "main": "index.js",
   "scripts": {
-    "test": "node --expose-internals --experimental-worker --expose_gc test/wpt/test.js"
+    "test": "node --expose-internals --expose_gc test/wpt/test.js"
   },
   "repository": {
     "type": "git",

test/wpt/test.js

@@ -1,12 +1,9 @@
 'use strict';
 
-// Flags: --expose-internals --experimental-worker --expose_gc
+// Flags: --expose-internals --expose_gc
 // Note:
 // - The --expose-internals flag is specific to Node.js core's
 //   internal error system and is unnecessary for external users.
-// - The --experimental-worker flag is used to inform the
-//   WPT harness that we are running tests in the Worker scope
-//   so it doesn't use document.methods().
 // - The --expose_gc flag is specific to the WPT stream tests
 
 const { WPTRunner } = require('../common/wpt');