diff --git a/tests/Doctrine/Tests/ORM/Performance/ProxyPerformanceTest.php b/tests/Doctrine/Tests/ORM/Performance/ProxyPerformanceTest.php
deleted file mode 100644
index d73964dcc..000000000
--- a/tests/Doctrine/Tests/ORM/Performance/ProxyPerformanceTest.php
+++ /dev/null
@@ -1,155 +0,0 @@
-<?php
-
-namespace Doctrine\Tests\ORM\Performance;
-
-use Doctrine\ORM\EntityManager;
-use Doctrine\ORM\Persisters\Entity\BasicEntityPersister;
-use Doctrine\ORM\Proxy\ProxyFactory;
-use Doctrine\ORM\UnitOfWork;
-use Doctrine\Tests\Models\CMS\CmsEmployee;
-use Doctrine\Tests\Models\CMS\CmsUser;
-use Doctrine\Tests\OrmPerformanceTestCase;
-
-/**
- * Performance test used to measure performance of proxy instantiation
- *
- * @author Marco Pivetta <ocramius@gmail.com>
- * @group performance
- */
-class ProxyPerformanceTest extends OrmPerformanceTestCase
-{
-    /**
-     * @return array
-     */
-    public function entitiesProvider()
-    {
-        return [
-            [CmsEmployee::class],
-            [CmsUser::class],
-        ];
-    }
-
-    /**
-     * @dataProvider entitiesProvider
-     */
-    public function testProxyInstantiationPerformance($entityName)
-    {
-        $proxyFactory = $this->_getEntityManager()->getProxyFactory();
-        $this->setMaxRunningTime(5);
-        $start = microtime(true);
-
-        for ($i = 0; $i < 100000; $i += 1) {
-            $user = $proxyFactory->getProxy($entityName, ['id' => $i]);
-        }
-
-        echo __FUNCTION__ . " - " . (microtime(true) - $start) . " seconds with " . $entityName . PHP_EOL;
-    }
-
-    /**
-     * @dataProvider entitiesProvider
-     */
-    public function testProxyForcedInitializationPerformance($entityName)
-    {
-        $em              = new MockEntityManager($this->_getEntityManager());
-        $proxyFactory    = $em->getProxyFactory();
-        /* @var $user \Doctrine\Common\Proxy\Proxy */
-        $user            = $proxyFactory->getProxy($entityName, ['id' => 1]);
-        $initializer     = $user->__getInitializer();
-
-        $this->setMaxRunningTime(5);
-        $start = microtime(true);
-
-        for ($i = 0; $i < 100000;  $i += 1) {
-            $user->__setInitialized(false);
-            $user->__setInitializer($initializer);
-            $user->__load();
-            $user->__load();
-        }
-
-        echo __FUNCTION__ . " - " . (microtime(true) - $start) . " seconds with " . $entityName . PHP_EOL;
-    }
-}
-
-/**
- * Mock entity manager to fake `getPersister()`
- */
-class MockEntityManager extends EntityManager
-{
-    /** @var EntityManager */
-    private $em;
-
-    /** @param EntityManager $em */
-    public function __construct(EntityManager $em)
-    {
-        $this->em = $em;
-    }
-
-    /** {@inheritDoc} */
-    public function getProxyFactory()
-    {
-        $config = $this->em->getConfiguration();
-
-        return new ProxyFactory(
-            $this,
-            $config->getProxyDir(),
-            $config->getProxyNamespace(),
-            $config->getAutoGenerateProxyClasses()
-        );
-    }
-
-    /** {@inheritDoc} */
-    public function getMetadataFactory()
-    {
-        return $this->em->getMetadataFactory();
-    }
-
-    /** {@inheritDoc} */
-    public function getClassMetadata($className)
-    {
-        return $this->em->getClassMetadata($className);
-    }
-
-    /** {@inheritDoc} */
-    public function getUnitOfWork()
-    {
-        return new MockUnitOfWork();
-    }
-}
-
-/**
- * Mock UnitOfWork manager to fake `getPersister()`
- */
-class MockUnitOfWork extends UnitOfWork
-{
-    /** @var PersisterMock */
-    private $entityPersister;
-
-    /** */
-    public function __construct()
-    {
-        $this->entityPersister = new PersisterMock();
-    }
-
-    /** {@inheritDoc} */
-    public function getEntityPersister($entityName)
-    {
-        return $this->entityPersister;
-    }
-}
-
-/**
- * Mock persister (we don't want PHPUnit comparator API to play a role in here)
- */
-class PersisterMock extends BasicEntityPersister
-{
-    /** */
-    public function __construct()
-    {
-    }
-
-    /** {@inheritDoc} */
-    public function load(array $criteria, $entity = null, $assoc = null, array $hints = [], $lockMode = 0, $limit = null, array $orderBy = null)
-    {
-        return $entity;
-    }
-}