Remove Eth1ForBlockProduction

[twoeths]

Problem description

post-electra since we implement eth1DepositDataTracker in BeaconState, we don't need to poll EL in order to have eth1Data + deposits for block production
also this module depends on CachedBeaconStateAllForks, which does not work after #8650

Solution description

remove this module, some other clients did this already

Additional context

No response

[nflaig]

I have a draft for this locally but need to do more review on it