Bug#917465: aplpy: autopkgtest needs update for new version of python-numpy

[Sandro Tosi]

>         warnings.warn('np.asscalar(a) is deprecated since NumPy v1.16, use '
> >                     'a.item() instead', DeprecationWarning, stacklevel=1)
> E       DeprecationWarning: np.asscalar(a) is deprecated since NumPy
> v1.16, use a.item() instead

it's a DeprecationWarning, why does aplpy tests suite treats it as an error?

-- 
Sandro "morph" Tosi
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