fix clippy

Signed-off-by: Naohiro Yoshida <naohiro.yoshida@datachain.jp>

Author: Naohiro Yoshida

light-client/src/header/eth_header.rs

@@ -1,5 +1,4 @@
 use alloc::vec::Vec;
-use elliptic_curve::bigint::U64;
 use elliptic_curve::sec1::ToEncodedPoint;
 use hex_literal::hex;
 use k256::ecdsa::{RecoveryId, Signature, VerifyingKey};

light-client/src/header/vote_attestation.rs

@@ -154,7 +154,7 @@ impl<'a> TryFrom<Rlp<'a>> for VoteAttestation {
 mod test {
     use crate::errors::Error;
     use crate::fixture::*;
-    use crate::header::eth_header::{get_validator_bytes_and_turn_length, ETHHeader};
+    use crate::header::eth_header::get_validator_bytes_and_turn_length;
     use crate::header::vote_attestation::{
         VoteAddressBitSet, VoteAttestation, VoteData, BLS_SIGNATURE_LENGTH,
         MAX_ATTESTATION_EXTRA_LENGTH,