Remove old code fragment

beacon_node/beacon_chain/src/beacon_chain.rs

@@ -648,48 +648,6 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
             .map_err(|e| Error::AttestationValidationError(e))
     }
 
-    /*
-    /// Retrieves the `BeaconState` used to create the attestation.
-    fn get_attestation_state(
-        &self,
-        attestation: &Attestation<T::EthSpec>,
-    ) -> Option<BeaconState<T::EthSpec>> {
-        let state = &self.head().beacon_state;
-
-        // Current state is used if the attestation targets a historic block and a slot within an
-        // equal or adjacent epoch.
-        let slots_per_epoch = T::EthSpec::slots_per_epoch();
-        let min_slot =
-            (self.state.read().slot.epoch(slots_per_epoch) - 1).start_slot(slots_per_epoch);
-        let blocks = BestBlockRootsIterator::owned(
-            self.store.clone(),
-            self.state.read().clone(),
-            self.state.read().slot.clone(),
-        );
-        for (root, slot) in blocks {
-            if root == attestation.data.target.root {
-                return Some(self.state.read().clone());
-            }
-
-            if slot == min_slot {
-                break;
-            }
-        }
-
-        // A different state is retrieved from the database.
-        match self
-            .store
-            .get::<BeaconBlock<T::EthSpec>>(&attestation.data.target.root)
-        {
-            Ok(Some(block)) => match self.store.get::<BeaconState<T::EthSpec>>(&block.state_root) {
-                Ok(state) => state,
-                _ => None,
-            },
-            _ => None,
-        }
-    }
-    */
-
     /// Accept some deposit and queue it for inclusion in an appropriate block.
     pub fn process_deposit(
         &self,