chore: removes all code related to the normalized state diff hash

[mds1]

The normalized state diff hash was introduced briefly as an experiment: Between upgrades 13 through 16, we had many upgrades for many chains with many state diffs, and at this time we required that VALIDATION.md files list all state diffs for every task. This was a lot of state diffs, so it was very tedious for task developers to create these files, and for signers to validate them.

As a result, we tried experimenting with a "normalized state diff hash" which commits to a state diff at the time a task is created, normalizing for any state variables that are not constant, such as timestamps. The idea was that signers would know that if that hash hasn't changed, the state diff has not changed since the task was created. To further lighten the load for task developers, we did state diff audits where the auditors would act as an independent third party that would generate and attest to the state diff.

This experiment worked ok, but ultimately it was not something we needed to continue, as we realized that for tasks using an OPCM we actually do not need to list every state diff. As a result, we no longer use normalized state diff hashes, therefore we can remove all of this code and the corresponding documentation from superchain-ops tasks going forward.

[Ethnical]

From my end, I have simulated and check the changes on previous tasks
And this is looks good to me, this is nice was confusing people a bit sometimes, especially when were missing some override during tasks simulation in sequencing.