redundant 'compatibility' for PHPUnit removed

tests/compatibility.php

@@ -1,75 +0,0 @@
-<?php
-/**
- * @link http://www.yiiframework.com/
- * @copyright Copyright (c) 2008 Yii Software LLC
- * @license http://www.yiiframework.com/license/
- */
-
-/*
- * Ensures compatibility with PHPUnit < 6.x
- */
-
-namespace PHPUnit\Framework\Constraint {
-    if (!class_exists('PHPUnit\Framework\Constraint\Constraint') && class_exists('PHPUnit_Framework_Constraint')) {
-        abstract class Constraint extends \PHPUnit_Framework_Constraint
-        {
-        }
-    }
-}
-
-namespace PHPUnit\TextUI {
-    if (!class_exists('\PHPUnit\TextUI\ResultPrinter') && class_exists('PHPUnit_TextUI_ResultPrinter')) {
-        class ResultPrinter extends \PHPUnit_TextUI_ResultPrinter
-        {
-        }
-    }
-}
-
-namespace PHPUnit\Framework\Error {
-    if (!class_exists('PHPUnit\Framework\Error\Notice') && class_exists('PHPUnit_Framework_Error_Notice')) {
-        class Notice extends \PHPUnit_Framework_Error_Notice
-        {
-        }
-    }
-}
-
-namespace PHPUnit\Framework {
-    if (!class_exists('PHPUnit\Framework\TestCase') && class_exists('PHPUnit_Framework_TestCase')) {
-        abstract class TestCase extends \PHPUnit_Framework_TestCase
-        {
-            /**
-             * @param string $exception
-             */
-            public function expectException($exception)
-            {
-                $this->setExpectedException($exception);
-            }
-
-            /**
-             * @param string $message
-             */
-            public function expectExceptionMessage($message)
-            {
-                $parentClassMethods = get_class_methods('PHPUnit_Framework_TestCase');
-                if (in_array('expectExceptionMessage', $parentClassMethods)) {
-                    parent::expectExceptionMessage($message);
-                    return;
-                }
-                $this->setExpectedException($this->getExpectedException(), $message);
-            }
-
-            /**
-             * @param string $messageRegExp
-             */
-            public function expectExceptionMessageRegExp($messageRegExp)
-            {
-                $parentClassMethods = get_class_methods('PHPUnit_Framework_TestCase');
-                if (in_array('expectExceptionMessageRegExp', $parentClassMethods)) {
-                    parent::expectExceptionMessageRegExp($messageRegExp);
-                    return;
-                }
-                $this->setExpectedExceptionRegExp($this->getExpectedException(), $messageRegExp);
-            }
-        }
-    }
-}