def unescape_double_quote(content: str) -> str:
    """
    Replace escaped double quote in content by removing the backslash.
    >>> unescape_double_quote(r'UTF\"-8')
    'UTF"-8'
    >>> unescape_double_quote(r'UTF"-8')
    'UTF"-8'
    """
    return content.replace(r"\"", '"')