Remove retired cleanup manifest state

internal/app/restore_manifest_paths.go

@@ -122,9 +122,6 @@ func rebaseRestoredManifestPaths(cfg *config.Config, m *manifest.Manifest, desti
 		m.LocalWorkDir = destinationRoot
 	}
 	m.LocalSpoolDir = ""
-	// A post-publish cleanup record is authority to delete producer-local
-	// directories. It must never cross a restore boundary.
-	m.PostPublishCleanup = nil
 	return nil
 }