diff --git a/eth2/types/src/lib.rs b/eth2/types/src/lib.rs
index a1a58198b..c38fa8031 100644
--- a/eth2/types/src/lib.rs
+++ b/eth2/types/src/lib.rs
@@ -23,7 +23,6 @@ pub mod free_attestation;
 pub mod historical_batch;
 pub mod pending_attestation;
 pub mod proposer_slashing;
-pub mod shard_reassignment_record;
 pub mod slashable_attestation;
 pub mod transfer;
 pub mod voluntary_exit;
diff --git a/eth2/types/src/proposal_signed_data.rs b/eth2/types/src/proposal_signed_data.rs
deleted file mode 100644
index 58f45a41d..000000000
--- a/eth2/types/src/proposal_signed_data.rs
+++ /dev/null
@@ -1,20 +0,0 @@
-use crate::test_utils::TestRandom;
-use crate::{Hash256, Slot};
-use rand::RngCore;
-use serde_derive::Serialize;
-use ssz_derive::{Decode, Encode, TreeHash};
-use test_random_derive::TestRandom;
-
-#[derive(Debug, PartialEq, Clone, Default, Serialize, Encode, Decode, TreeHash, TestRandom)]
-pub struct ProposalSignedData {
-    pub slot: Slot,
-    pub shard: u64,
-    pub block_root: Hash256,
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    ssz_tests!(ProposalSignedData);
-}
diff --git a/eth2/types/src/shard_reassignment_record.rs b/eth2/types/src/shard_reassignment_record.rs
deleted file mode 100644
index 9f1705f16..000000000
--- a/eth2/types/src/shard_reassignment_record.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-use crate::{test_utils::TestRandom, Slot};
-use rand::RngCore;
-use serde_derive::Serialize;
-use ssz_derive::{Decode, Encode, TreeHash};
-use test_random_derive::TestRandom;
-
-#[derive(Debug, PartialEq, Clone, Serialize, Encode, Decode, TreeHash, TestRandom)]
-pub struct ShardReassignmentRecord {
-    pub validator_index: u64,
-    pub shard: u64,
-    pub slot: Slot,
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    ssz_tests!(ShardReassignmentRecord);
-}
diff --git a/eth2/types/src/slashable_vote_data.rs b/eth2/types/src/slashable_vote_data.rs
deleted file mode 100644
index 73cf91c61..000000000
--- a/eth2/types/src/slashable_vote_data.rs
+++ /dev/null
@@ -1,132 +0,0 @@
-use super::AttestationData;
-use crate::chain_spec::ChainSpec;
-use crate::test_utils::TestRandom;
-use bls::AggregateSignature;
-use rand::RngCore;
-use serde_derive::Serialize;
-use ssz_derive::{Decode, Encode, TreeHash};
-use test_random_derive::TestRandom;
-
-#[derive(Debug, PartialEq, Clone, Serialize, Encode, Decode, TreeHash, TestRandom)]
-pub struct SlashableVoteData {
-    pub custody_bit_0_indices: Vec<u32>,
-    pub custody_bit_1_indices: Vec<u32>,
-    pub data: AttestationData,
-    pub aggregate_signature: AggregateSignature,
-}
-
-impl SlashableVoteData {
-    /// Check if ``attestation_data_1`` and ``attestation_data_2`` have the same target.
-    ///
-    /// Spec v0.3.0
-    pub fn is_double_vote(&self, other: &SlashableVoteData, spec: &ChainSpec) -> bool {
-        self.data.slot.epoch(spec.epoch_length) == other.data.slot.epoch(spec.epoch_length)
-    }
-
-    /// Check if ``attestation_data_1`` surrounds ``attestation_data_2``.
-    ///
-    /// Spec v0.3.0
-    pub fn is_surround_vote(&self, other: &SlashableVoteData, spec: &ChainSpec) -> bool {
-        let source_epoch_1 = self.data.justified_epoch;
-        let source_epoch_2 = other.data.justified_epoch;
-        let target_epoch_1 = self.data.slot.epoch(spec.epoch_length);
-        let target_epoch_2 = other.data.slot.epoch(spec.epoch_length);
-
-        (source_epoch_1 < source_epoch_2) && (target_epoch_2 < target_epoch_1)
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use crate::chain_spec::ChainSpec;
-    use crate::slot_epoch::{Epoch, Slot};
-    use crate::test_utils::{SeedableRng, TestRandom, XorShiftRng};
-
-    #[test]
-    pub fn test_is_double_vote_true() {
-        let spec = ChainSpec::foundation();
-        let slashable_vote_first = create_slashable_vote_data(1, 1, &spec);
-        let slashable_vote_second = create_slashable_vote_data(1, 1, &spec);
-
-        assert_eq!(
-            slashable_vote_first.is_double_vote(&slashable_vote_second, &spec),
-            true
-        )
-    }
-
-    #[test]
-    pub fn test_is_double_vote_false() {
-        let spec = ChainSpec::foundation();
-        let slashable_vote_first = create_slashable_vote_data(1, 1, &spec);
-        let slashable_vote_second = create_slashable_vote_data(2, 1, &spec);
-
-        assert_eq!(
-            slashable_vote_first.is_double_vote(&slashable_vote_second, &spec),
-            false
-        );
-    }
-
-    #[test]
-    pub fn test_is_surround_vote_true() {
-        let spec = ChainSpec::foundation();
-        let slashable_vote_first = create_slashable_vote_data(2, 1, &spec);
-        let slashable_vote_second = create_slashable_vote_data(1, 2, &spec);
-
-        assert_eq!(
-            slashable_vote_first.is_surround_vote(&slashable_vote_second, &spec),
-            true
-        );
-    }
-
-    #[test]
-    pub fn test_is_surround_vote_true_realistic() {
-        let spec = ChainSpec::foundation();
-        let slashable_vote_first = create_slashable_vote_data(4, 1, &spec);
-        let slashable_vote_second = create_slashable_vote_data(3, 2, &spec);
-
-        assert_eq!(
-            slashable_vote_first.is_surround_vote(&slashable_vote_second, &spec),
-            true
-        );
-    }
-
-    #[test]
-    pub fn test_is_surround_vote_false_source_epoch_fails() {
-        let spec = ChainSpec::foundation();
-        let slashable_vote_first = create_slashable_vote_data(2, 2, &spec);
-        let slashable_vote_second = create_slashable_vote_data(1, 1, &spec);
-
-        assert_eq!(
-            slashable_vote_first.is_surround_vote(&slashable_vote_second, &spec),
-            false
-        );
-    }
-
-    #[test]
-    pub fn test_is_surround_vote_false_target_epoch_fails() {
-        let spec = ChainSpec::foundation();
-        let slashable_vote_first = create_slashable_vote_data(1, 1, &spec);
-        let slashable_vote_second = create_slashable_vote_data(2, 2, &spec);
-
-        assert_eq!(
-            slashable_vote_first.is_surround_vote(&slashable_vote_second, &spec),
-            false
-        );
-    }
-
-    ssz_tests!(SlashableVoteData);
-
-    fn create_slashable_vote_data(
-        slot_factor: u64,
-        justified_epoch: u64,
-        spec: &ChainSpec,
-    ) -> SlashableVoteData {
-        let mut rng = XorShiftRng::from_seed([42; 16]);
-        let mut slashable_vote = SlashableVoteData::random_for_test(&mut rng);
-
-        slashable_vote.data.slot = Slot::new(slot_factor * spec.epoch_length);
-        slashable_vote.data.justified_epoch = Epoch::new(justified_epoch);
-        slashable_vote
-    }
-}
diff --git a/eth2/types/src/validator_registry_delta_block.rs b/eth2/types/src/validator_registry_delta_block.rs
deleted file mode 100644
index e9a075052..000000000
--- a/eth2/types/src/validator_registry_delta_block.rs
+++ /dev/null
@@ -1,36 +0,0 @@
-use crate::{test_utils::TestRandom, Hash256, Slot};
-use bls::PublicKey;
-use rand::RngCore;
-use serde_derive::Serialize;
-use ssz_derive::{Decode, Encode, TreeHash};
-use test_random_derive::TestRandom;
-
-// The information gathered from the PoW chain validator registration function.
-#[derive(Debug, Clone, PartialEq, Serialize, Encode, Decode, TreeHash, TestRandom)]
-pub struct ValidatorRegistryDeltaBlock {
-    pub latest_registry_delta_root: Hash256,
-    pub validator_index: u32,
-    pub pubkey: PublicKey,
-    pub slot: Slot,
-    pub flag: u64,
-}
-
-impl Default for ValidatorRegistryDeltaBlock {
-    /// Yields a "default" `Validator`. Primarily used for testing.
-    fn default() -> Self {
-        Self {
-            latest_registry_delta_root: Hash256::zero(),
-            validator_index: std::u32::MAX,
-            pubkey: PublicKey::default(),
-            slot: Slot::from(std::u64::MAX),
-            flag: std::u64::MAX,
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    ssz_tests!(ValidatorRegistryDeltaBlock);
-}