remove account derivation functions (#1498)

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

@@ -29,7 +29,7 @@ use frame_support::{
 use frame_system::limits;
 use sp_core::Hasher as HasherT;
 use sp_runtime::{
-	traits::{BlakeTwo256, Convert, IdentifyAccount, Verify},
+	traits::{BlakeTwo256, IdentifyAccount, Verify},
 	FixedU128, MultiSignature, MultiSigner, Perbill,
 };
 use sp_std::prelude::*;
@@ -181,28 +181,6 @@ impl Chain for Rialto {
 	}
 }
 
-/// Convert a 256-bit hash into an AccountId.
-pub struct AccountIdConverter;
-
-impl Convert<sp_core::H256, AccountId> for AccountIdConverter {
-	fn convert(hash: sp_core::H256) -> AccountId {
-		hash.to_fixed_bytes().into()
-	}
-}
-
-// We use this to get the account on Rialto (target) which is derived from Millau's (source)
-// account. We do this so we can fund the derived account on Rialto at Genesis to it can pay
-// transaction fees.
-//
-// The reason we can use the same `AccountId` type for both chains is because they share the same
-// development seed phrase.
-//
-// Note that this should only be used for testing.
-pub fn derive_account_from_millau_id(id: bp_runtime::SourceAccount<AccountId>) -> AccountId {
-	let encoded_id = bp_runtime::derive_account_id(bp_runtime::MILLAU_CHAIN_ID, id);
-	AccountIdConverter::convert(encoded_id)
-}
-
 frame_support::parameter_types! {
 	pub BlockLength: limits::BlockLength =
 		limits::BlockLength::max_with_normal_ratio(5 * 1024 * 1024, NORMAL_DISPATCH_RATIO);