Skip empty obsolete owner when adding to own NC

The owner field is nowadays always empty when adding a federated share
using "Add to your Nextcloud", so don't check for it.

Fixes an issue where "Add to your Nextcloud" doesn't add anything.

Signed-off-by: Vincent Petry <vincent@nextcloud.com>

apps/federatedfilesharing/js/external.js

@@ -99,7 +99,7 @@
 			var fileList = this.filesApp.fileList;
 			var params = OC.Util.History.parseUrlQuery();
 			// manually add server-to-server share
-			if (params.remote && params.token && params.owner && params.name) {
+			if (params.remote && params.token && params.name) {
 
 				var callbackAddShare = function(result, share) {
 					var password = share.password || '';