Revert "Blank access keys before writing config."

This reverts commit 85c4080661cc4d7aa777d7797d0536204a93f8ad.

netclient/functions/pull.go

@@ -72,7 +72,6 @@ func Pull(network string, iface bool) (*models.Node, error) {
 		}
 		informPortChange(&resNode)
 	}
-	resNode.AccessKey = "" // don't store the access key on disk
 	if err = config.ModNodeConfig(&resNode); err != nil {
 		return nil, err
 	}