Durability example is out of date

[WilliamParker]

The example for durability is broken due to using the old API that we have completely replaced with oracle-samples/clara-rules@f7a0773#diff-ce5bba4c033cda865447745807a as discussed at oracle-samples/clara-rules#198

We should add an example that uses the new API. Until we create such an example I suggest that we remove the existing example since the new API is completely different and the old example merely misinforms. Any objections?

[rbrush]

Sounds good to me!

[WilliamParker]

I removed the example for now with #11

[mrrodriguez]

@WilliamParker should this be closed?