perf: remove genesis state from chainspec (#41)

RSP does not make use of the genesis state, which is parsed from JSON at
runtime, costing a lot of zkVM cycles.

Switches to manually constructing `ChainSpec` instead.

crates/executor/client/src/lib.rs

@@ -21,7 +21,7 @@ use reth_execution_types::ExecutionOutcome;
 use reth_optimism_consensus::validate_block_post_execution as validate_block_post_execution_optimism;
 use reth_primitives::{proofs, Block, BlockWithSenders, Bloom, Header, Receipt, Receipts, Request};
 use revm::{db::CacheDB, Database};
-use revm_primitives::{Address, U256};
+use revm_primitives::{address, U256};
 
 /// Chain ID for Ethereum Mainnet.
 pub const CHAIN_ID_ETH_MAINNET: u64 = 0x1;
@@ -178,7 +178,7 @@ impl ClientExecutor {
 
 impl Variant for EthereumVariant {
     fn spec() -> ChainSpec {
-        rsp_primitives::chain_spec::mainnet().unwrap()
+        rsp_primitives::chain_spec::mainnet()
     }
 
     fn execute<DB>(
@@ -209,7 +209,7 @@ impl Variant for EthereumVariant {
 
 impl Variant for OptimismVariant {
     fn spec() -> ChainSpec {
-        rsp_primitives::chain_spec::op_mainnet().unwrap()
+        rsp_primitives::chain_spec::op_mainnet()
     }
 
     fn execute<DB>(
@@ -240,7 +240,7 @@ impl Variant for OptimismVariant {
 
 impl Variant for LineaVariant {
     fn spec() -> ChainSpec {
-        rsp_primitives::chain_spec::linea_mainnet().unwrap()
+        rsp_primitives::chain_spec::linea_mainnet()
     }
 
     fn execute<DB>(
@@ -279,7 +279,7 @@ impl Variant for LineaVariant {
         // - address: 20 bytes
         // - seal: 65 bytes
         // we extract the address from the 32nd to 52nd byte.
-        let addr = Address::from_slice(&Self::spec().genesis().extra_data[32..52]);
+        let addr = address!("8f81e2e3f8b46467523463835f965ffe476e1c9e");
 
         // We hijack the beneficiary address here to match the clique consensus.
         let mut block = block.clone();