Fix ufunc call

[Saul Shanabrook]

This doesn't look right, the real function doesn't include one of the overloads:

class ufunc:
    @overload
    def __call__(self, _0: numpy.ndarray, _1: numpy.ndarray, /):
        """
        usage.sample-usage: 1
        """
        ...

    @overload
    def __call__(self, _0: numpy.ndarray, /):
        """
        usage.sample-usage: 2
        """
        ...

    def __call__(self, _0: numpy.ndarray, /):
        """
        usage.sample-usage: 3
        """