Check if it's possible to remove the pool db dependency for permissionless nodes

[tclemos]

Today the pool is handled by the Trusted Sequencer and the permissionless nodes basically redirect calls to the Trusted Sequencer pool, but the Pool.DB is still required by the permissionless node to run.

The idea is to check all the features that the permissionless node depend on the pool and see if there is a possibility to remove the db dependency, making the Trusted Sequencer the source of truth for these information.