fix(federatedfilesharing): remove unused import

Signed-off-by: Enrique Pérez Arnaud <enrique@cazalla.net>

Author: enriquepablo

apps/federatedfilesharing/lib/OCM/CloudFederationProviderFiles.php

@@ -8,7 +8,6 @@
 
 use OC\AppFramework\Http;
 use OC\Files\Filesystem;
-use OC\Files\SetupManager;
 use OC\OCM\OCMSignatoryManager;
 use OCA\FederatedFileSharing\AddressHandler;
 use OCA\FederatedFileSharing\FederatedShareProvider;