def remove_whitespace(seq: str) -> str:
    """
    Remove whitespace from the given sequence
    >>> remove_whitespace("R K D E S")
    'RKDES'
    >>> remove_whitespace("R K D RR K")
    'RKDRRK'
    >>> remove_whitespace("RKIL")
    'RKIL'
    """
    return "".join(seq.split())