eth/catalyst: remove blsync code

eth/catalyst/blsync.go

@@ -1,88 +0,0 @@
-// Copyright 2024 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package catalyst
-
-import (
-	"github.com/ethereum/go-ethereum/beacon/engine"
-	"github.com/ethereum/go-ethereum/beacon/types"
-	"github.com/ethereum/go-ethereum/eth"
-	"github.com/ethereum/go-ethereum/event"
-	"github.com/ethereum/go-ethereum/log"
-)
-
-// Blsync tracks the head of the beacon chain through the beacon light client
-// and drives the local node via ConsensusAPI.
-type Blsync struct {
-	engine  *ConsensusAPI
-	client  Client
-	headCh  chan types.ChainHeadEvent
-	headSub event.Subscription
-
-	quitCh chan struct{}
-}
-
-type Client interface {
-	SubscribeChainHeadEvent(ch chan<- types.ChainHeadEvent) event.Subscription
-	Start()
-	Stop()
-}
-
-// NewBlsync creates a new beacon light syncer.
-func NewBlsync(client Client, eth *eth.Ethereum) *Blsync {
-	return &Blsync{
-		engine: newConsensusAPIWithoutHeartbeat(eth),
-		client: client,
-		headCh: make(chan types.ChainHeadEvent, 16),
-		quitCh: make(chan struct{}),
-	}
-}
-
-// Start starts underlying beacon light client and the sync logic for driving
-// the local node.
-func (b *Blsync) Start() error {
-	log.Info("Beacon light sync started")
-	b.headSub = b.client.SubscribeChainHeadEvent(b.headCh)
-	go b.client.Start()
-
-	for {
-		select {
-		case <-b.quitCh:
-			return nil
-		case head := <-b.headCh:
-			if _, err := b.engine.NewPayloadV2(*head.HeadBlock); err != nil {
-				log.Error("failed to send new payload", "err", err)
-				continue
-			}
-			update := engine.ForkchoiceStateV1{
-				HeadBlockHash:      head.HeadBlock.BlockHash,
-				SafeBlockHash:      head.Finalized, //TODO pass finalized or empty hash here?
-				FinalizedBlockHash: head.Finalized,
-			}
-			if _, err := b.engine.ForkchoiceUpdatedV1(update, nil); err != nil {
-				log.Error("failed to send forkchoice updated", "err", err)
-				continue
-			}
-		}
-	}
-}
-
-// Stop signals to the light client and syncer to exit.
-func (b *Blsync) Stop() error {
-	b.client.Stop()
-	close(b.quitCh)
-	return nil
-}