switch to stable API

Signed-off-by: Severin Hamader <severin.hamader@yahoo.de>

Author: Bungeefan

appinfo/info.xml

@@ -16,7 +16,7 @@
     <bugs>https://github.com/nextcloud/integration_google/issues</bugs>
     <screenshot>https://github.com/nextcloud/integration_google/raw/master/img/screenshot1.jpg</screenshot>
     <dependencies>
-        <nextcloud min-version="30" max-version="32"/>
+        <nextcloud min-version="31" max-version="32"/>
     </dependencies>
     <settings>
         <admin>OCA\Google\Settings\Admin</admin>

lib/Service/GoogleDriveAPIService.php

@@ -14,11 +14,11 @@
 
 use DateTime;
 use Exception;
-use NCU\Config\IUserConfig;
 use OCA\Google\AppInfo\Application;
 use OCA\Google\BackgroundJob\ImportDriveJob;
 use OCA\Google\Service\Utils\FileUtils;
 use OCP\BackgroundJob\IJobList;
+use OCP\Config\IUserConfig;
 use OCP\Files\File;
 use OCP\Files\Folder;
 use OCP\Files\InvalidPathException;