diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC6613Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC6613Test.php
deleted file mode 100644
index d95c8d8ff..000000000
--- a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC6613Test.php
+++ /dev/null
@@ -1,107 +0,0 @@
-<?php
-
-namespace Doctrine\Tests\ORM\Functional\Ticket;
-
-use Doctrine\Common\Collections\ArrayCollection;
-use Doctrine\ORM\PersistentCollection;
-use Doctrine\Tests\OrmFunctionalTestCase;
-
-/**
- * @group #6613
- * @group #6614
- */
-class DDC6613Test extends OrmFunctionalTestCase
-{
-    public function setUp()
-    {
-        parent::setUp();
-
-        $this->setUpEntitySchema([
-            DDC6613InverseSide::class,
-            DDC6613OwningSide::class,
-        ]);
-    }
-
-    public function testFail()
-    {
-        $owningSide = new DDC6613OwningSide();
-
-        $this->_em->persist($owningSide);
-        $this->_em->flush();
-        $this->_em->clear();
-
-        $item1 = new DDC6613InverseSide();
-        $item2 = new DDC6613InverseSide();
-
-        $this->_em->persist($item1);
-        $this->_em->persist($item2);
-        $this->_em->flush();
-
-        /* @var DDC6613OwningSide $foundOwningSide */
-        $foundOwningSide = $this->_em->find(DDC6613OwningSide::class, $owningSide->id);
-
-        self::assertInstanceOf(DDC6613OwningSide::class, $foundOwningSide);
-
-        /* @var $phones PersistentCollection */
-        $phones = $foundOwningSide->phones;
-
-        self::assertInstanceOf(PersistentCollection::class, $phones);
-        self::assertFalse($phones->isInitialized());
-        self::assertFalse($phones->isDirty());
-
-        $phones->add($item1);
-
-        self::assertFalse($phones->isInitialized());
-        self::assertTrue($phones->isDirty());
-
-        $this->_em->flush();
-
-        self::assertFalse($phones->isInitialized());
-        self::assertFalse($phones->isDirty());
-
-        $phones->add($item2);
-
-        self::assertFalse($phones->isInitialized());
-        self::assertTrue($phones->isDirty());
-
-        $phones->initialize();
-
-        self::assertTrue($phones->isInitialized());
-        self::assertTrue($phones->isDirty());
-        self::assertCount(2, $phones);
-
-        $this->_em->flush();
-
-        self::assertFalse($phones->isDirty());
-        self::assertTrue($phones->isInitialized());
-        self::assertCount(2, $foundOwningSide->phones);
-    }
-}
-
-/** @Entity */
-class DDC6613OwningSide
-{
-    /** @Id @Column(type="string") */
-    public $id;
-
-    /** @ManyToMany(targetEntity=DDC6613InverseSide::class) */
-    public $phones;
-
-    public function __construct()
-    {
-        $this->id     = uniqid('user', true);
-        $this->phones = new ArrayCollection();
-    }
-}
-
-/** @Entity */
-class DDC6613InverseSide
-{
-    /** @Id @Column(type="string") */
-    private $id;
-
-    public function __construct()
-    {
-        $this->id = uniqid('phone', true);
-    }
-}
\ No newline at end of file