Clear out old v2.0 objects

src/utils/types.rs

@@ -1,39 +1,11 @@
 use super::ethereum_types::{ H256, H160 };
-use super::active_state::ActiveState;
-use super::crystallized_state::CrystallizedState;
 use super::boolean_bitfield::BooleanBitfield;
 
 pub use super::blake2::Blake2s;
 pub use super::ethereum_types::U256;
 
-// TODO: presently the compiler accepts these two types
-// as interchangable. This is somewhat loose typing, 
-// which is bad. Make the compiler think they're incompatible.
-pub type Sha256Digest = H256;
-pub type Blake2sDigest = H256;
 pub type Hash256 = H256;
 
 pub type Address = H160;
 
-pub struct StateHash {
-    pub active_state: Blake2sDigest,
-    pub crystallized_state: Blake2sDigest
-}
-
-impl StateHash {
-    pub fn zero() -> Self {
-        Self {
-            active_state: Blake2sDigest::zero(),
-            crystallized_state: Blake2sDigest::zero()
-        }
-    }
-
-    pub fn from_states(active: &ActiveState, crystal: &CrystallizedState) -> Self {
-        Self {
-            active_state: active.blake2s_hash(),
-            crystallized_state: crystal.blake2s_hash()
-        }
-    }
-}
-
 pub type Bitfield = BooleanBitfield;