fix DBAL-630 ticket functional test

tests/Doctrine/Tests/DBAL/Functional/Ticket/DBAL630Test.php

@@ -2,8 +2,8 @@
 
 namespace Doctrine\Tests\DBAL\Functional\Ticket;
 
+use Doctrine\DBAL\DBALException;
 use Doctrine\DBAL\Exception\TableExistsException;
-use Doctrine\DBAL\Schema\Table;
 use PDO;
 
 /**
@@ -23,15 +23,10 @@ class DBAL630Test extends \Doctrine\Tests\DbalFunctionalTestCase
             $this->markTestSkipped('Currently restricted to PostgreSQL');
         }
 
-        $sm = $this->_conn->getSchemaManager();
-
-        $table = new Table('dbal630');
-        $table->addColumn('id', 'integer', array('autoincrement' => true));
-        $table->addColumn('bool_col', 'boolean');
-        $table->setPrimaryKey(array('id'));
-
-        $sm->dropAndCreateTable($table);
-
+        try {
+            $this->_conn->exec('CREATE TABLE dbal630 (id SERIAL, bool_col BOOLEAN NOT NULL);');
+        } catch (DBALException $e) {
+        }
         $this->running = true;
     }