Removed PDOSqlsrv connection class

Signed-off-by: Juozas Kaziukenas <juozas@juokaz.com>

lib/Doctrine/DBAL/Driver/PDOSqlsrv/Connection.php

-<?php
-/*
- *  $Id$
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * This software consists of voluntary contributions made by many individuals
- * and is licensed under the LGPL. For more information, see
- * <http://www.doctrine-project.org>.
- */
-
-namespace Doctrine\DBAL\Driver\PDOSqlsrv;
-
-/**
- * Sqlsrv Connection implementation.
- *
- * @since 2.0
- */
-class Connection extends \PDO implements \Doctrine\DBAL\Driver\Connection
-{
-    /**
-     * Performs the rollback.
-     * 
-     * @override
-     */
-    public function rollback()
-    {
-        $this->exec('ROLLBACK TRANSACTION');
-    }
-
-    /**
-     * Performs the commit.
-     * 
-     * @override
-     */
-    public function commit()
-    {
-        $this->exec('COMMIT TRANSACTION');
-    }
-
-    /**
-     * Begins a database transaction.
-     * 
-     * @override
-     */
-    public function beginTransaction()
-    {
-        $this->exec('BEGIN TRANSACTION');
-    }
-}
\ No newline at end of file

lib/Doctrine/DBAL/Driver/PDOSqlsrv/Driver.php

@@ -34,7 +34,7 @@ class Driver implements \Doctrine\DBAL\Driver
             $driverOptions['Database'] = $params['dbname'];
         }
         
-        return new Connection(
+        return new \Doctrine\DBAL\Driver\PDOConnection(
             $this->_constructPdoDsn($params),
             $username,
             $password,