Core: Remove support for PhantomJS

Ref #1505.

src/globals.js

@@ -64,7 +64,7 @@ export const localSessionStorage = (function () {
 }());
 
 // Basic fallback for ES6 Map
-// Support: Safari 7, PhantomJS; Map is undefined
+// Support: Safari 7; Map is undefined
 // Support: iOS 8; `new Map(iterable)` is not supported
 //
 // Fallback for ES7 Map#keys

src/html-reporter/html.js

@@ -1068,17 +1068,7 @@ const stats = {
     testItem.className = 'fail';
   });
 
-  // Avoid readyState issue with phantomjs
-  // Ref: #818
-  const usingPhantom = (function (p) {
-    return (p && p.version && p.version.major > 0);
-  })(window.phantom);
-
-  if (usingPhantom) {
-    console.warn('Support for PhantomJS is deprecated and will be removed in QUnit 3.0.');
-  }
-
-  if (!usingPhantom && document.readyState === 'complete') {
+  if (document.readyState === 'complete') {
     QUnit.autostart();
   } else {
     addEvent(window, 'load', QUnit.autostart);

test/reorder.js

@@ -15,9 +15,6 @@ QUnit.test('Second', function (assert) {
   assert.strictEqual(lastTest, '');
   lastTest = 'Second';
 
-  // For some reason PhantomJS mutates config.reorder
-  QUnit.config.reorder = true;
-
   // This test is "high priority" so it should execute before test "First"
   // even though it is added to the queue late
   // eslint-disable-next-line qunit/no-nested-tests