chore: remove blockhash from the l1 contracts + circuit public inputs

[Maddiaa0]

Overview

At the moment, the nodes sign over and come to consensus over an archiveHash which is the root of all of the tree updates for the given block, including the values that are in the block header.

The blockHash that is floated around the place, is just a subset of the information stored about in the header. However, as it is provided separately, and not checked in L1, it is currently possible to use it to "dos" the system, as anything can be passed in, which will only be caught when the epoch proof lands.

For this reason, the value should be removed from the L1 contract and public inputs to the epoch proof. The reason that we can safely remove them from the public inputs is as mentioned, that it is already incorporated in other values provided.

tl;dr: The Poseidon blockhash passed around should be removed from L1 and public inputs.

Relevant discussions

#7727 (comment)

( this discussion argues that we need to infact keep the blockhash and remove the archive. However this observation is based on the sequencer potentially NOT having the archive ( which can only happen if it does not execute). Under the assumption that we will execute, we can remove the blockhash )