[zero zkEVM] - remove unnecessary smt logic

[krlosMata]

Rationale

Some storage slots in hermez SMT are specific to the hermez protocol. Therefore, some of them could be removed since zero protocol differs on how some variables are computed/loaded from the circuit perspective
This issue aims to summarize all storage slots that are not needed for Zero prover:

ADDRESS_SYSTEM address

• ADDRESS_SYSTEM: BlockInfoTreeRoot
  • blockInfoTree is no longer needed
  • zero uses native blockhash validation (same as Ethereum)
  • No need to write in this storage slot
• ADDRESS_SYSTEM: mapping stateRoot
  • mapping to store all state-roots which are the blockjhahes for each block in a mapping like mapping(uint256 blockNum => bytes32) blockToBlockHash;
  • zero gets previous 256 blockhahes from an input which a commitment to the previous 256 blockhashes
  • no need to store them
• ADDRESS_SYSTEM: lastBlock
  • hermez protocol ensures contiguity on block numbers through this storage slot in the state-tree
  • zero ensures contiguity via the parentHash
  • no need to write this storage slot
• ADDRESS_SYSTEM: timestamp
  • same as before, but this time related to the timestamp

[rachit77]

This PR which is merged fixes this issue.

[Stefan-Ethernal]

Marking as done per #1191 (comment).