Remove message fee + message send calls (#1642)

* remove message fee

* it is compiling!

* fixes + fmt

* more cleanup

* more cleanup

* restore MessageDeliveryAndDispatchPayment since we'll need relayer rewards

* started rational relayer removal

* more removal

* removed estimate fee subcommand

* remove DispatchFeePayment

* more removals

* removed conversion rates && some metrics

* - unneeded associated type

* - OutboundMessageFee

* fix benchmarks compilation

* fmt

* test + fix benchmarks

* fix send message

* clippy

bridges/relays/bin-substrate/src/chains/rialto.rs

@@ -16,15 +16,9 @@
 
 //! Rialto chain specification for CLI.
 
-use crate::cli::{
-	bridge,
-	encode_message::{CliEncodeMessage, RawMessage},
-	CliChain,
-};
-use bp_messages::LaneId;
+use crate::cli::{bridge, encode_message::CliEncodeMessage, CliChain};
 use bp_runtime::EncodedOrDecodedCall;
 use relay_rialto_client::Rialto;
-use relay_substrate_client::BalanceOf;
 use sp_version::RuntimeVersion;
 use xcm::latest::prelude::*;
 
@@ -48,28 +42,6 @@ impl CliEncodeMessage for Rialto {
 		})
 		.into())
 	}
-
-	fn encode_send_message_call(
-		lane: LaneId,
-		payload: RawMessage,
-		fee: BalanceOf<Self>,
-		bridge_instance_index: u8,
-	) -> anyhow::Result<EncodedOrDecodedCall<Self::Call>> {
-		Ok(match bridge_instance_index {
-			bridge::RIALTO_TO_MILLAU_INDEX => rialto_runtime::RuntimeCall::BridgeMillauMessages(
-				rialto_runtime::MessagesCall::send_message {
-					lane_id: lane,
-					payload,
-					delivery_and_dispatch_fee: fee,
-				},
-			)
-			.into(),
-			_ => anyhow::bail!(
-				"Unsupported target bridge pallet with instance index: {}",
-				bridge_instance_index
-			),
-		})
-	}
 }
 
 impl CliChain for Rialto {