deprecate disallowed-offsets config for re-orgs (#9449)

https://github.com/ethereum/consensus-specs/pull/5348. As per discussions in issue we no longer need to support `disallowed-offsets` for pre-Fulu forks.


  


Co-Authored-By: hopinheimer <knmanas6@gmail.com>

beacon_node/beacon_chain/src/block_production/mod.rs

@@ -220,7 +220,6 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                 canonical_head,
                 re_org_head_threshold,
                 re_org_parent_threshold,
-                &self.config.re_org_disallowed_offsets,
                 re_org_max_epochs_since_finalization,
             )
             .map_err(|e| match e {