Remove Westend<>Rococo header sync (#940)

* Remove scripts for Westend<>Rococo header sync

* Remove Westend<>Rococo header sync code

* Remove Westend<>Rococo init bridge CLI option

* Modify Westend mock call to be placeholder

* Fix call encoding test

bridges/primitives/chain-rococo/src/lib.rs

@@ -55,14 +55,14 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 /// See: https://github.com/paritytech/polkadot/blob/master/runtime/rococo/src/lib.rs
 #[derive(parity_scale_codec::Encode, parity_scale_codec::Decode, Debug, PartialEq, Eq, Clone)]
 pub enum Call {
-	/// Westend bridge pallet.
+	/// Generic bridge pallet.
 	#[codec(index = 40)]
-	BridgeGrandpaWestend(BridgeGrandpaWestendCall),
+	BridgeCall(BridgeGrandpaCall),
 }
 
 #[derive(parity_scale_codec::Encode, parity_scale_codec::Decode, Debug, PartialEq, Eq, Clone)]
 #[allow(non_camel_case_types)]
-pub enum BridgeGrandpaWestendCall {
+pub enum BridgeGrandpaCall {
 	#[codec(index = 0)]
 	submit_finality_proof(
 		<PolkadotLike as Chain>::Header,
@@ -83,13 +83,6 @@ impl sp_runtime::traits::Dispatchable for Call {
 	}
 }
 
-// We use this to get the account on Rococo (target) which is derived from Westend's (source)
-// account.
-pub fn derive_account_from_westend_id(id: bp_runtime::SourceAccount<AccountId>) -> AccountId {
-	let encoded_id = bp_runtime::derive_account_id(bp_runtime::WESTEND_BRIDGE_INSTANCE, id);
-	AccountIdConverter::convert(encoded_id)
-}
-
 /// Name of the `RococoFinalityApi::best_finalized` runtime method.
 pub const BEST_FINALIZED_ROCOCO_HEADER_METHOD: &str = "RococoFinalityApi_best_finalized";
 /// Name of the `RococoFinalityApi::is_known_header` runtime method.