remove non necessary test

Author: GregoireHebert

tests/Bridge/Symfony/Validator/Metadata/Property/ValidatorPropertyMetadataFactoryTest.php

@@ -199,7 +199,5 @@ public function testCreateWithPropertyWithValidationConstraints()
             $resultedPropertyMetadata = $validatorPropertyMetadataFactory->create(DummyIriWithValidationEntity::class, $property);
             $this->assertSame($iri, $resultedPropertyMetadata->getIri());
         }
-
-        $this->assertInstanceOf(PropertyMetadata::class, $resultedPropertyMetadata);
     }
 }