Fixing test after #180 missed updating this usage

Author: weaverryan

tests/Doctrine/EntityRegeneratorTest.php

@@ -92,9 +92,6 @@ private function doTestRegeneration(string $sourceDir, Kernel $kernel, string $n
             $doctrineHelper,
             $fileManager,
             new Generator($fileManager, 'App\\'),
-            // project root: just used to fetch the autoloader
-            // and in this case, we want to use *our* autoloader
-            __DIR__.'/../../',
             $overwrite
         );