def filter_tokens(tokens, filters):
    """ eliminates tokens contained in filters
    args:
        tokens: list of tokens to be filtered.
        filters: list of tokens that will get removed from 'tokens'.
    returns:
        filtered_tokens: a list of tokens that don't contain any
        token from filters.
    """
    filtered_tokens = []
    for token in tokens:
        if token not in filters:
            filtered_tokens.append(token)
    return filtered_tokens