--- a/pallets/common/src/eth.rs
+++ b/pallets/common/src/eth.rs
@@ -64,30 +64,6 @@
 	T::CrossAccountId::from_sub(account_id)
 }
 
-/// Convert tuple `(address, uint256)` to `CrossAccountId`.
-///
-/// If `address` in the tuple has *default* value, then the canonical form is substrate,
-/// if `uint256` has *default* value, then the ethereum form is canonical,
-/// if both values are *default* or *non default*, then this is considered an invalid address and `Error` is returned.
-pub fn convert_tuple_to_cross_account<T: Config>(
-	eth_cross_account_id: (address, uint256),
-) -> evm_coder::execution::Result<T::CrossAccountId>
-where
-	T::AccountId: From<[u8; 32]>,
-{
-	if eth_cross_account_id == Default::default() {
-		Err("All fields of cross account is zeroed".into())
-	} else if eth_cross_account_id.0 == Default::default() {
-		Ok(convert_uint256_to_cross_account::<T>(
-			eth_cross_account_id.1,
-		))
-	} else if eth_cross_account_id.1 == Default::default() {
-		Ok(T::CrossAccountId::from_eth(eth_cross_account_id.0))
-	} else {
-		Err("All fields of cross account is non zeroed".into())
-	}
-}
-
 /// Cross account struct
 #[derive(Debug, Default, AbiCoder)]
 pub struct EthCrossAccount {