db batch may not be a global resource

This way db usage is safe.

cmd/db_cleanup.go

@@ -188,9 +188,6 @@ func aptlyDbCleanup(cmd *commander.Command, args []string) error {
 			err = toDelete.ForEach(func(ref []byte) error {
 				return collectionFactory.PackageCollection().DeleteByKey(ref, batch)
 			})
-			if err != nil {
-				return err
-			}
 
 			err = batch.Write()
 			if err != nil {