Remove the rtag file

def clear_rtag(opts):
    '''
    Remove the rtag file
    '''
    try:
        os.remove(rtag(opts))
    except OSError as exc:
        if exc.errno != errno.ENOENT:
            # Using __str__() here to get the fully-formatted error message
            # (error number, error message, path)
            log.warning('Encountered error removing rtag: %s', exc.__str__())