Change: Make `unlock` display message only when locks were actually removed The `unlock` command used to print the "successfully removed locks" message whenever it was run, regardless of lock files having being removed or not. This has now been changed such that it only prints the message if any lock files were actually removed. In addition, it also reports the number of removed lock files. https://github.com/restic/restic/issues/3929 https://github.com/restic/restic/pull/3935