diff --git a/tests/Fixtures/Factory.php b/tests/Fixtures/Factory.php
deleted file mode 100644
index a37e838..0000000
--- a/tests/Fixtures/Factory.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-// SPDX-FileCopyrightText: 2015-2023 Artur Weigandt https://wlabs.de/kontakt
-//
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-namespace Art4\JsonApiClient\Tests\Fixtures;
-
-use Art4\JsonApiClient\Factory as FactoryInterface;
-
-final class Factory implements FactoryInterface
-{
-    public $testcase;
-
-    /**
-     * Create a new instance of a class
-     *
-     * @param string $name
-     * @param array  $args
-     *
-     * @return object
-     */
-    public function make($name, array $args = [])
-    {
-        return $this->testcase
-            ->getMockBuilder('Art4\JsonApiClient\\' . $name . 'Interface') // Mock only the interfaces
-            ->disableOriginalConstructor()
-            ->disableOriginalClone()
-            ->disableArgumentCloning()
-            ->disallowMockingUnknownTypes()
-            ->getMock();
-    }
-}
diff --git a/tests/Fixtures/HelperTrait.php b/tests/Fixtures/HelperTrait.php
index aefbb70..2949bad 100644
--- a/tests/Fixtures/HelperTrait.php
+++ b/tests/Fixtures/HelperTrait.php
@@ -11,7 +11,6 @@
 use Art4\JsonApiClient\Accessable;
 use Art4\JsonApiClient\Factory;
 use Art4\JsonApiClient\Manager;
-use Art4\JsonApiClient\Tests\Fixtures\Factory as FixtureFactory;
 use PHPUnit\Framework\MockObject\MockObject;
 
 /**
@@ -139,30 +138,6 @@ public static function jsonValuesAsStringProviderWithoutObject(): array
         return array_values($data);
     }
 
-    /**
-     * Builds a Manager Mock
-     */
-    public function buildManagerMock()
-    {
-        // Mock factory
-        $factory = new FixtureFactory();
-        $factory->testcase = $this;
-
-        // Mock Manager
-        $manager = $this->createMock(Manager::class);
-
-        $manager->expects($this->any())
-            ->method('getFactory')
-            ->will($this->returnValue($factory));
-
-        $manager->expects($this->any())
-            ->method('getConfig')
-            ->with('optional_item_id')
-            ->willReturn(false);
-
-        return $manager;
-    }
-
     /**
      * Builds a Manager Mock and set it into the TestCase
      */