use canonical, standalone sepolia network definition repository (#4762)

.gitmodules

@@ -193,16 +193,15 @@
 	url = https://github.com/status-im/nim-toml-serialization.git
 	ignore = untracked
 	branch = master
-[submodule "vendor/merge-testnets"]
-	path = vendor/merge-testnets
-	url = https://github.com/eth-clients/merge-testnets.git
-	branch = main
 [submodule "vendor/gnosis-chain-configs"]
 	path = vendor/gnosis-chain-configs
 	url = https://github.com/gnosischain/configs.git
 [submodule "vendor/withdrawals-testnets"]
 	path = vendor/withdrawals-testnets
 	url = https://github.com/ethpandaops/withdrawals-testnet.git
+[submodule "vendor/sepolia"]
+	path = vendor/sepolia
+	url = https://github.com/eth-clients/sepolia.git
 [submodule "vendor/nim-kzg4844"]
 	path = vendor/nim-kzg4844
 	url = https://github.com/status-im/nim-kzg4844/

beacon_chain/networking/network_metadata.nim

@@ -77,7 +77,7 @@ type
 
 const
   eth2NetworksDir = currentSourcePath.parentDir.replace('\\', '/') & "/../../vendor/eth2-networks"
-  mergeTestnetsDir = currentSourcePath.parentDir.replace('\\', '/') & "/../../vendor/merge-testnets"
+  sepoliaDir = currentSourcePath.parentDir.replace('\\', '/') & "/../../vendor/sepolia"
 
 proc readBootstrapNodes*(path: string): seq[string] {.raises: [IOError, Defect].} =
   # Read a list of ENR values from a YAML file containing a flat list of entries
@@ -205,10 +205,6 @@ template eth2Network(path: string, eth1Network: Eth1Network): Eth2NetworkMetadat
   loadCompileTimeNetworkMetadata(eth2NetworksDir & "/" & path,
                                  some eth1Network)
 
-template mergeTestnet(path: string, eth1Network: Eth1Network): Eth2NetworkMetadata =
-  loadCompileTimeNetworkMetadata(mergeTestnetsDir & "/" & path,
-                                 some eth1Network)
-
 when const_preset == "gnosis":
   const
     gnosisMetadata* = loadCompileTimeNetworkMetadata(
@@ -223,12 +219,13 @@ elif const_preset == "mainnet":
   const
     mainnetMetadata* = eth2Network("shared/mainnet", mainnet)
     praterMetadata* = eth2Network("shared/prater", goerli)
-    sepoliaMetadata* = mergeTestnet("sepolia", sepolia)
+    sepoliaMetadata* =
+      loadCompileTimeNetworkMetadata(sepoliaDir & "/bepolia", some sepolia)
   static:
     for network in [mainnetMetadata, praterMetadata, sepoliaMetadata]:
       checkForkConsistency(network.cfg)
 
-    for network in [mainnetMetadata, praterMetadata]:
+    for network in [mainnetMetadata, praterMetadata, sepoliaMetaData]:
       doAssert network.cfg.DENEB_FORK_EPOCH == FAR_FUTURE_EPOCH
 
 proc getMetadataForNetwork*(

vendor/merge-testnets

@@ -1 +0,0 @@
-Subproject commit baebfaba3c0dcb8b6e4d5113e52fd6981253a152

vendor/sepolia

@@ -0,0 +1 @@
+Subproject commit 23dbdd7077fa0abdd7c8f29862a2f8883151d144