Clean capella (#4019)

## Issue Addressed

Cleans up all the remnants of 4844 in capella. This makes sure when 4844 is reviewed there is nothing we are missing because it got included here 

## Proposed Changes

drop a bomb on every 4844 thing 

## Additional Info

Merge process I did (locally) is as follows:
- squash merge to produce one commit
- in new branch off unstable with the squashed commit create a `git revert HEAD` commit
- merge that new branch onto 4844 with `--strategy ours`
- compare local 4844 to remote 4844 and make sure the diff is empty
- enjoy

Co-authored-by: Paul Hauner <paul@paulhauner.com>

lcli/src/create_payload_header.rs

@@ -5,8 +5,8 @@ use std::fs::File;
 use std::io::Write;
 use std::time::{SystemTime, UNIX_EPOCH};
 use types::{
-    EthSpec, ExecutionPayloadHeader, ExecutionPayloadHeaderCapella, ExecutionPayloadHeaderEip4844,
-    ExecutionPayloadHeaderMerge, ForkName,
+    EthSpec, ExecutionPayloadHeader, ExecutionPayloadHeaderCapella, ExecutionPayloadHeaderMerge,
+    ForkName,
 };
 
 pub fn run<T: EthSpec>(matches: &ArgMatches) -> Result<(), String> {
@@ -40,14 +40,6 @@ pub fn run<T: EthSpec>(matches: &ArgMatches) -> Result<(), String> {
             prev_randao: eth1_block_hash.into_root(),
             ..ExecutionPayloadHeaderCapella::default()
         }),
-        ForkName::Eip4844 => ExecutionPayloadHeader::Eip4844(ExecutionPayloadHeaderEip4844 {
-            gas_limit,
-            base_fee_per_gas,
-            timestamp: genesis_time,
-            block_hash: eth1_block_hash,
-            prev_randao: eth1_block_hash.into_root(),
-            ..ExecutionPayloadHeaderEip4844::default()
-        }),
     };
 
     let mut file = File::create(file_name).map_err(|_| "Unable to create file".to_string())?;