Strip out old code

All of these files have been moved to either:

- https://github.com/sigp/lighthouse-beacon
- https://github.com/sigp/lighthouse-validator
- https://github.com/sigp/lighthouse-common

For rationale, see: https://github.com/sigp/lighthouse/issues/197

validator_client/src/duties/test_node.rs

@@ -1,32 +0,0 @@
-use super::traits::{BeaconNode, BeaconNodeError};
-use super::EpochDuties;
-use bls::PublicKey;
-use std::sync::RwLock;
-use types::Epoch;
-
-type ShufflingResult = Result<Option<EpochDuties>, BeaconNodeError>;
-
-/// A test-only struct used to simulate a Beacon Node.
-#[derive(Default)]
-pub struct TestBeaconNode {
-    pub request_shuffling_input: RwLock<Option<(Epoch, PublicKey)>>,
-    pub request_shuffling_result: RwLock<Option<ShufflingResult>>,
-}
-
-impl TestBeaconNode {
-    /// Set the result to be returned when `request_shuffling` is called.
-    pub fn set_next_shuffling_result(&self, result: ShufflingResult) {
-        *self.request_shuffling_result.write().unwrap() = Some(result);
-    }
-}
-
-impl BeaconNode for TestBeaconNode {
-    /// Returns the value specified by the `set_next_shuffling_result`.
-    fn request_shuffling(&self, epoch: Epoch, public_key: &PublicKey) -> ShufflingResult {
-        *self.request_shuffling_input.write().unwrap() = Some((epoch, public_key.clone()));
-        match *self.request_shuffling_result.read().unwrap() {
-            Some(ref r) => r.clone(),
-            None => panic!("TestBeaconNode: produce_result == None"),
-        }
-    }
-}