remove remaining Crosslink and CompactCommittee vestiges

beacon_chain/spec/beaconstate.nim

@@ -612,7 +612,6 @@ proc makeAttestationData*(
     epoch_boundary_block_root =
       if start_slot == state.slot: beacon_block_root
       else: get_block_root_at_slot(state, start_slot)
-    parent_crosslink_end_epoch = state.current_crosslinks[shard].end_epoch
     (a_slot, a_index) = get_slot_and_index(state, current_epoch, shard)
 
   AttestationData(

beacon_chain/spec/datatypes.nim

@@ -186,11 +186,6 @@ type
     signature*: ValidatorSig ##\
     ## Proposer signature
 
-  # https://github.com/ethereum/eth2.0-specs/blob/v0.8.4/specs/core/0_beacon-chain.md#compactcommittee
-  CompactCommittee* = object
-    pubkeys*: seq[ValidatorPubKey]
-    compact_validators*: seq[uint64]
-
   # https://github.com/ethereum/eth2.0-specs/blob/v0.9.0/specs/core/0_beacon-chain.md#beaconblockheader
   BeaconBlockHeader* = object
     slot*: Slot
@@ -323,12 +318,6 @@ type
     previous_epoch_attestations*: seq[PendingAttestation]
     current_epoch_attestations*: seq[PendingAttestation]
 
-    # Crosslinks
-    previous_crosslinks*: array[SHARD_COUNT, Crosslink] ##\
-    ## Previous epoch snapshot
-
-    current_crosslinks*: array[SHARD_COUNT, Crosslink]
-
     # Finality
     justification_bits*: uint8 ##\
     ## Bit set for every recent justified epoch
@@ -364,17 +353,6 @@ type
     withdrawable_epoch*: Epoch ##\
     ## When validator can withdraw or transfer funds
 
-  # https://github.com/ethereum/eth2.0-specs/blob/v0.8.4/specs/core/0_beacon-chain.md#crosslink
-  Crosslink* = object
-    shard*: Shard
-    parent_root*: Eth2Digest
-
-    start_epoch*: Epoch
-    end_epoch*: Epoch ##\
-    ## Crosslinking data
-
-    data_root*: Eth2Digest
-
   # https://github.com/ethereum/eth2.0-specs/blob/v0.9.0/specs/core/0_beacon-chain.md#pendingattestation
   PendingAttestation* = object
     aggregation_bits*: CommitteeValidatorsBits
@@ -675,15 +653,6 @@ func shortLog*(v: BeaconBlock): auto =
     signature: shortLog(v.signature)
   )
 
-func shortLog*(v: Crosslink): auto =
-  (
-    shard: v.shard,
-    parent_root: shortLog(v.parent_root),
-    start_epoch: shortLog(v.start_epoch),
-    end_epoch: shortLog(v.end_epoch),
-    data_root: shortLog(v.data_root)
-  )
-
 func shortLog*(v: AttestationData): auto =
   (
     beacon_block_root: shortLog(v.beacon_block_root),
@@ -697,7 +666,6 @@ chronicles.formatIt Slot: it.shortLog
 chronicles.formatIt Epoch: it.shortLog
 chronicles.formatIt BeaconBlock: it.shortLog
 chronicles.formatIt AttestationData: it.shortLog
-chronicles.formatIt CrossLink: it.shortLog
 
 static:
   # Ensure that get_crosslink_committee(...) can access all committees, which

tests/mocking/mock_attestations.nim

@@ -46,11 +46,6 @@ proc mockAttestationData(
     result.source = state.current_justified_checkpoint
 
   let target_epoch = compute_epoch_at_slot(slot)
-  let parent_crosslink = block:
-    if target_epoch == get_current_epoch(state):
-      state.current_crosslinks[shard]
-    else:
-      state.previous_crosslinks[shard]
 
   # Constructed to be provide exact equivalent index... to compute_committee(...)
   # as using epoch/shard.