Use createSchemaForModels()

This allows to get rid of tearDown(), which contained a special handling
that is no longer necessary since we switched away from explicitely
managed sequences, and caused the test suite to fail.

tests/Doctrine/Tests/ORM/Functional/SequenceEmulatedIdentityStrategyTest.php

@@ -22,27 +22,10 @@ protected function setUp(): void
                 'This test is special to platforms emulating IDENTITY key generation strategy through sequences.'
             );
         } else {
-            $this->_schemaTool->createSchema(
-                [$this->_em->getClassMetadata(SequenceEmulatedIdentityEntity::class)]
-            );
+            $this->createSchemaForModels(SequenceEmulatedIdentityEntity::class);
         }
     }
 
-    protected function tearDown(): void
-    {
-        parent::tearDown();
-
-        $connection = $this->_em->getConnection();
-        $platform   = $connection->getDatabasePlatform();
-
-        // drop sequence manually due to dependency
-        $connection->executeStatement(
-            $platform->getDropSequenceSQL(
-                $platform->getIdentitySequenceName('seq_identity', 'id')
-            )
-        );
-    }
-
     public function testPreSavePostSaveCallbacksAreInvoked(): void
     {
         $entity = new SequenceEmulatedIdentityEntity();