Remove broken moneta adapter

[halorgium]

There are some features which we need to reconsider if we are to have a
moneta adapter.
The main one is being able to clear the registries independently.

[halorgium]

For reference, it might make sense to use the new version of Moneta at some point. See #37

[coveralls]

Coverage decreased (-0.07%) when pulling eb9f4a9 on halorgium:remove-moneta into d45d97c on celluloid:master.

[minad]

You use this registry to register the distributed objects? Imho you can easily use Moneta for that. If you need further backends these can also be added to Moneta assuming that they can be mapped to a k/v system.

[halorgium]

@minad yup, understood.
I am trying to solve and close most of the issues as we are tackling a larger change inside Celluloid.
Follow along at https://groups.google.com/d/msg/celluloid-ruby/Rd2AurcPNpo/xejk2OT3zwEJ if you want.

[tarcieri]

@minad it's not that Moneta can't do this, it's that the DCell "adapter" API needs to change (to an actor), and the fewer of them we have to port over the better.

We can revisit this when DCell is in a better state.