Redundant dependency on Class::Load

[kentfredric]

As per the changes entry in ff42620 / #598

There should be no more dependency on Class::Load

However:

https://metacpan.org/source/RJBS/Dist-Zilla-6.015/META.json#L54

And this looks due to

Dist-Zilla/dist.ini

Line 40 in 64dd98f

Class::Load = 0.17

[rjbs]

This has been addressed.