small fixes in tests and examples

examples/export.php

@@ -10,7 +10,7 @@ use \RouterOS\Query;
 // Create config object with parameters
 $config =
     (new Config())
-        ->set('host', '192.168.1.3')
+        ->set('host', '127.0.0.1')
         ->set('pass', 'admin')
         ->set('user', 'admin');
 

tests/ClientTest.php

@@ -6,9 +6,7 @@ use PHPUnit\Framework\TestCase;
 use RouterOS\Client;
 use RouterOS\Query;
 use RouterOS\Config;
-use RouterOS\Exceptions\Exception;
 use RouterOS\Exceptions\ClientException;
-use RouterOS\Exceptions\ConfigException;
 
 class ClientTest extends TestCase
 {