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>

testing/ef_tests/src/handler.rs

@@ -24,11 +24,6 @@ pub trait Handler {
 
     fn run(&self) {
         for fork_name in ForkName::list_all() {
-            // FIXME(eip4844): enable eip4844
-            if fork_name == ForkName::Eip4844 {
-                continue;
-            }
-
             if self.is_enabled_for_fork(fork_name) {
                 self.run_for_fork(fork_name)
             }