chore(deps)!: remove unused deps

they're reexported from the `k256` crate; were previously explicitly imported to enable `serde` feature flag, that's not necessary any longer after type simplifications around inner ECDSA pubkey/signature representation.

Author: David-Petrov

Cargo.toml

@@ -62,8 +62,6 @@ blst = "0.3.11"
 tree_hash = "0.5"
 tree_hash_derive = "0.5"
 eth2_keystore = { git = "https://github.com/sigp/lighthouse", rev = "9e12c21f268c80a3f002ae0ca27477f9f512eb6f" }
-elliptic-curve = { version = "0.13", features = ["serde"] }
-generic-array = { version = "0.14.7", features = ["serde"] }
 k256 = "0.13"
 
 # docker

crates/common/Cargo.toml

@@ -35,8 +35,6 @@ blst.workspace = true
 tree_hash.workspace = true
 tree_hash_derive.workspace = true
 eth2_keystore.workspace = true
-elliptic-curve.workspace = true
-generic-array.workspace = true
 k256.workspace = true
 
 # misc

crates/common/src/signer/schemes/ecdsa.rs

@@ -2,8 +2,10 @@ use core::fmt;
 use std::hash::Hash;
 
 use derive_more::derive::{Deref, From, Into};
-use generic_array::GenericArray;
-use k256::ecdsa::{Signature as EcdsaSignatureInner, VerifyingKey as EcdsaPublicKeyInner};
+use k256::{
+    ecdsa::{Signature as EcdsaSignatureInner, VerifyingKey as EcdsaPublicKeyInner},
+    elliptic_curve::generic_array::GenericArray,
+};
 use serde::{Deserialize, Serialize};
 use serde_utils::hex;
 use ssz_types::{