fix(tests): fix import ordering and remove unused import

AI-Assisted-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Anna Larch <anna@nextcloud.com>

Author: miaulalala

tests/lib/AppConfigMigrationFallbackTest.php

@@ -7,17 +7,16 @@
  */
 namespace Test;
 
+use Doctrine\DBAL\Exception\InvalidFieldNameException;
 use OC\AppConfig;
 use OC\Config\ConfigManager;
 use OC\Config\PresetManager;
 use OC\DB\Exceptions\DbalException;
 use OC\Memcache\Factory as CacheFactory;
-use Doctrine\DBAL\Exception\InvalidFieldNameException;
 use OCP\DB\Exception as DBException;
 use OCP\DB\IResult;
 use OCP\DB\QueryBuilder\IExpressionBuilder;
 use OCP\DB\QueryBuilder\IQueryBuilder;
-use OCP\ICache;
 use OCP\IConfig;
 use OCP\IDBConnection;
 use OCP\Security\ICrypto;

tests/lib/Config/UserConfigMigrationFallbackTest.php

@@ -7,11 +7,11 @@
  */
 namespace Test\lib\Config;
 
+use Doctrine\DBAL\Exception\InvalidFieldNameException;
 use OC\Config\ConfigManager;
 use OC\Config\PresetManager;
 use OC\Config\UserConfig;
 use OC\DB\Exceptions\DbalException;
-use Doctrine\DBAL\Exception\InvalidFieldNameException;
 use OCP\DB\Exception as DBException;
 use OCP\DB\IResult;
 use OCP\DB\QueryBuilder\IExpressionBuilder;