Remove redundant ":type" and ":rtype" information from the docstring

[HiromuHota]

Is your feature request related to a problem? Please describe.

See https://github.com/HazyResearch/fonduer/pull/421#issuecomment-631587136.

Describe the solution you'd like

Remove redundant ":type" and ":rtype" information from the docstring

Describe alternatives you've considered

N/A.

Additional context

Now Fonduer has type hints in the method definition, which makes ":type" and ":rtype" in docstring redundant.

[HiromuHota]

I just realized that not all methods have type hints as I expected. For example, RegexMatchSpan have type hints only at docstring.

class _Matcher(object):
    def __init__(self, *children, **opts):  # type: ignore

class _RegexMatch(_Matcher):
    """
    Base regex class. Does not specify specific semantics of *what* is being
    matched yet.
    """

    def init(self) -> None:

class RegexMatchSpan(_RegexMatch):
    """Matches regex pattern on **full concatenated span**.

    :param rgx: The RegEx pattern to use.
    :type rgx: str
    :param ignore_case: Whether or not to ignore case in the RegEx. Default
        True.
    :type ignore_case: bool
    :param search: If True, *search* the regex pattern through the concatenated span.
        If False, try to *match* the regex patten only at its beginning. Default False.
    :type search: bool
    :param full_match: If True, wrap the provided rgx with ``(<rgx>)$``.
        Default True.
    :type full_match: bool
    :param longest_match_only: If True, only return the longest match. Default True.
        Will be overridden by the parent matcher like :class:`Union` when it is wrapped
        by :class:`Union`, :class:`Intersect`, or :class:`Inverse`.
    :type longest_match_only: bool
    """

[HiromuHota]

As of faae9c2cbc56ee4775729f0cc2730b7eec71b869, the numbers of ":type" and ":rtype" in src/ are like below:

$ grep -r ":type" src/ | wc -l
     176
$ grep -r ":rtype" src/ | wc -l
     106

[senwu]

Can we add a todo to make sure all methods have type hint?

[lukehsiao]

Already exists here: https://github.com/HazyResearch/fonduer/issues/66

[senwu]

Awesome!