To delete the temporary backup file after restore operation is successful.

deleteRestoreBackupFile.java

public static void deleteRestoreBackupFile(Context context) {
        File directory = new File(getFilePath(context, 0), "backup");
        String sfpath = directory.getPath() + File.separator + BACKUP_RESTORE_ROLLBACK_FILE_NAME;
        //This is to prevent deleting extra file being deleted which is mentioned in previous comment lines.
        File restoreFile = new File(sfpath);

        if (restoreFile.exists()) {
            restoreFile.delete();
        }
    }