Blob sidecar signatures: Remove DOMAIN_BLOB_SIDECAR

The constant was removed from consensus-specs in v1.4.0-beta.5.
Blob sidecar signing was actually replaced in v1.4.0-beta.4.

http_api/src/full_config.rs

@@ -22,7 +22,6 @@ use types::{
     bellatrix::primitives::Gas,
     capella::consts::DOMAIN_BLS_TO_EXECUTION_CHANGE,
     config::Config,
-    deneb::consts::DOMAIN_BLOB_SIDECAR,
     phase0::{
         consts::{
             AttestationSubnetCount, DepositContractTreeDepth, JustificationBitsLength,
@@ -146,9 +145,6 @@ pub struct FullConfig {
 
     // TODO(feature/deneb): Add constants from the Polynomial Commitments specification if needed.
 
-    // Deneb domain types
-    domain_blob_sidecar: DomainType,
-
     // Builder constants
     #[serde(with = "serde_utils::string_or_native")]
     builder_proposal_delay_tolerance: u64,
@@ -232,9 +228,6 @@ impl FullConfig {
             // Capella domain types
             domain_bls_to_execution_change: DOMAIN_BLS_TO_EXECUTION_CHANGE,
 
-            // Deneb domain types
-            domain_blob_sidecar: DOMAIN_BLOB_SIDECAR,
-
             // Builder constants
             builder_proposal_delay_tolerance: BUILDER_PROPOSAL_DELAY_TOLERANCE,
             domain_application_builder: DOMAIN_APPLICATION_BUILDER,

types/src/deneb/consts.rs

@@ -1,12 +1,6 @@
-use ethereum_types::H32;
 use hex_literal::hex;
 use typenum::{U32, U6};
 
-use crate::phase0::primitives::DomainType;
-
-// TODO(feature/deneb): Remove `DOMAIN_BLOB_SIDECAR` and everything that uses it.
-//                      Blob sidecars are no longer signed starting with v1.4.0-beta.5.
-pub const DOMAIN_BLOB_SIDECAR: DomainType = H32(hex!("0b000000"));
 pub const VERSIONED_HASH_VERSION_KZG: &[u8] = &hex!("01");
 
 // TODO(feature/deneb): Can `BlobSidecarSubnetCount` be a `const`?