Fixed warnings in tests

src/consensus/base.rs

src/consensus/pob/demurrage.rs

src/consensus/pob/miner.rs

src/execution/evm/tests/eip2929.rs

src/execution/mod.rs

src/execution/processor.rs

src/models/behavior.rs

src/models/block.rs

src/models/header.rs

src/p2p/node/node.rs

src/stages/hashstate.rs

src/trie/intermediate_hashes.rs