refactor(consensus): remove not needed commit timeout and unused LastPrecommits

[lklimek]

Issue being fixed or feature implemented

We don't need LastPrecommits because they are only used in Tenderdash to construct commit.
In our case, it's enough to just set LastCommit, as we use threshold signatures and don't need these precommits.

It also means we don't need to wait for all precommits to get to our node, so commit timeout is not needed.

What was done?

Removed LastPrecommits.

Removed consensus params: commit timeout and bypass_commit_timeout.

How Has This Been Tested?

GHA + tested during stress tests on ouzo devnet

Breaking Changes

Changed definition of consensus params: removed timeout commit and bypass_commit_timeout.
Affects protobuf and json encoding of these params.

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone

[shumkov]

👍