delete unnecessary steps from context files

tests/acceptance/bootstrap/SpacesContext.php

@@ -29,7 +29,6 @@ use PHPUnit\Framework\Assert;
 use Psr\Http\Message\ResponseInterface;
 use TestHelpers\HttpRequestHelper;
 use TestHelpers\WebDavHelper;
-use TestHelpers\SetupHelper;
 use TestHelpers\GraphHelper;
 use TestHelpers\OcHelper;
 use TestHelpers\BehatHelper;