import re


def clean_url(url: str) -> str:
    """Remove zero width spaces, leading/trailing whitespaces, trailing slashes,
    and URL prefixes from a URL

    Args:
        url (str): URL

    Returns:
        str: URL without zero width spaces, leading/trailing whitespaces, trailing slashes,
    and URL prefixes
    """
    removed_zero_width_spaces = re.sub(r"[\u200B-\u200D\uFEFF]", "", url)
    removed_leading_and_trailing_whitespaces = removed_zero_width_spaces.strip()
    removed_trailing_slashes = removed_leading_and_trailing_whitespaces.rstrip("/")
    removed_https = re.sub(r"^[Hh][Tt][Tt][Pp][Ss]:\/\/", "", removed_trailing_slashes)
    removed_http = re.sub(r"^[Hh][Tt][Tt][Pp]:\/\/", "", removed_https)

    return removed_http