Remove built-in global variables in comments

test/helper/page-util.js

@@ -1,4 +1,4 @@
-/* global window, VirtualMachine, ScratchStorage, ScratchSVGRenderer */
+/* global VirtualMachine, ScratchStorage, ScratchSVGRenderer */
 /* eslint-env browser */
 
 // Wait for all SVG skins to be loaded.

test/integration/pick-tests.js

@@ -1,4 +1,4 @@
-/* global vm, render, Promise */
+/* global vm, render */
 const {chromium} = require('playwright-chromium');
 const test = require('tap').test;
 const path = require('path');

test/integration/scratch-tests.js

@@ -1,4 +1,4 @@
-/* global vm, Promise */
+/* global vm */
 const {chromium} = require('playwright-chromium');
 const test = require('tap').test;
 const path = require('path');