Unregisters given path.

        :param path: Path name.
        :type path: unicode
        :return: Method success.
        :rtype: bool

def unregister_path(self, path):
        """
        Unregisters given path.

        :param path: Path name.
        :type path: unicode
        :return: Method success.
        :rtype: bool
        """

        if not path in self:
            raise umbra.exceptions.PathExistsError("{0} | '{1}' path isn't registered!".format(
                self.__class__.__name__, path))

        del (self.__paths[path])
        return True