Drop Rialto <> Millau bridges (#2663) (#2694)

* drop Rialto <> Millau bridges

* clippy

bridges/bin/runtime-common/src/lib.rs

@@ -22,7 +22,6 @@ use crate::messages_call_ext::MessagesCallSubType;
 use pallet_bridge_grandpa::CallSubType as GrandpaCallSubType;
 use pallet_bridge_parachains::CallSubType as ParachainsCallSubtype;
 use sp_runtime::transaction_validity::TransactionValidity;
-use xcm::v3::NetworkId;
 
 pub mod messages;
 pub mod messages_api;
@@ -92,8 +91,8 @@ where
 /// ```nocompile
 /// generate_bridge_reject_obsolete_headers_and_messages!{
 ///     Call, AccountId
-///     BridgeRialtoGrandpa, BridgeWestendGrandpa,
-///     BridgeRialtoParachains
+///     BridgeRococoGrandpa, BridgeRococoMessages,
+///     BridgeRococoParachains
 /// }
 /// ```
 ///
@@ -147,42 +146,6 @@ macro_rules! generate_bridge_reject_obsolete_headers_and_messages {
 	};
 }
 
-/// A mapping over `NetworkId`.
-/// Since `NetworkId` doesn't include `Millau`, `Rialto` and `RialtoParachain`, we create some
-/// synthetic associations between these chains and `NetworkId` chains.
-pub enum CustomNetworkId {
-	/// The Millau network ID, associated with Kusama.
-	Millau,
-	/// The Rialto network ID, associated with Polkadot.
-	Rialto,
-	/// The RialtoParachain network ID, associated with Westend.
-	RialtoParachain,
-}
-
-impl TryFrom<bp_runtime::ChainId> for CustomNetworkId {
-	type Error = ();
-
-	fn try_from(chain: bp_runtime::ChainId) -> Result<Self, Self::Error> {
-		Ok(match chain {
-			bp_runtime::MILLAU_CHAIN_ID => Self::Millau,
-			bp_runtime::RIALTO_CHAIN_ID => Self::Rialto,
-			bp_runtime::RIALTO_PARACHAIN_CHAIN_ID => Self::RialtoParachain,
-			_ => return Err(()),
-		})
-	}
-}
-
-impl CustomNetworkId {
-	/// Converts self to XCM' network id.
-	pub const fn as_network_id(&self) -> NetworkId {
-		match *self {
-			CustomNetworkId::Millau => NetworkId::Kusama,
-			CustomNetworkId::Rialto => NetworkId::Polkadot,
-			CustomNetworkId::RialtoParachain => NetworkId::Westend,
-		}
-	}
-}
-
 #[cfg(test)]
 mod tests {
 	use crate::BridgeRuntimeFilterCall;