Revert declare(strict_types=1); from new driver classes

lib/Doctrine/DBAL/Driver/IBMDB2/Connection.php

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\IBMDB2;
 
 final class Connection extends DB2Connection

lib/Doctrine/DBAL/Driver/IBMDB2/Statement.php

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\IBMDB2;
 
 final class Statement extends DB2Statement

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

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\Mysqli;
 
 final class Connection extends MysqliConnection

lib/Doctrine/DBAL/Driver/Mysqli/Statement.php

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\Mysqli;
 
 final class Statement extends MysqliStatement

lib/Doctrine/DBAL/Driver/OCI8/Connection.php

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\OCI8;
 
 final class Connection extends OCI8Connection

lib/Doctrine/DBAL/Driver/OCI8/Statement.php

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\OCI8;
 
 final class Statement extends OCI8Statement

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

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\PDO;
 
 use Doctrine\DBAL\Driver\PDOConnection;

lib/Doctrine/DBAL/Driver/PDO/Statement.php

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\PDO;
 
 use Doctrine\DBAL\Driver\PDOStatement;

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

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\SQLSrv;
 
 final class Connection extends SQLSrvConnection

lib/Doctrine/DBAL/Driver/SQLSrv/Statement.php

 <?php
 
-declare(strict_types=1);
-
 namespace Doctrine\DBAL\Driver\SQLSrv;
 
 class Statement extends SQLSrvStatement