chore: Make objects public

Remove dead_code check and leftover file after a merge
Improve some docstrings

--- don't change below this line ---
ENG-4087 Took 1 hour 39 minutes

src/encoding/evm/approvals/permit2.rs

@@ -60,7 +60,6 @@ sol! {
     }
 }
 
-#[allow(dead_code)]
 impl Permit2 {
     pub fn new(signer_pk: String, chain: Chain) -> Result<Self, EncodingError> {
         let chain_id = ChainId::from(chain);

src/encoding/evm/approvals/protocol_approvals_manager.rs

@@ -12,7 +12,6 @@ use tokio::runtime::Runtime;
 
 use crate::encoding::{errors::EncodingError, evm::utils::encode_input};
 
-#[allow(dead_code)]
 pub struct ProtocolApprovalsManager {
     client: Arc<RootProvider<BoxTransport>>,
     runtime: Runtime,