src/vs/platform/backup/electron-main/backupMainService.ts/BackupMainService/deleteStaleBackup
class BackupMainService:	private async deleteStaleBackup(backupPath: string): Promise<void> {
		try {
			await Promises.rm(backupPath, RimRafMode.MOVE);
		} catch (error) {
			this.logService.error(`Backup: Could not delete stale backup: ${error.toString()}`);
		}
	}