feat: Remove generalisation on user approvals manager

This is a too early over generalisation. We need to encode the permit and the signature all together with the other method input variables. This way the return type will be specific to permit2 (instead Vec<u8>) anyway. For simplicity, decided to remove the generalisation and keep things simple

--- don't change below this line ---
ENG-4081 Took 2 hours 23 minutes


Took 9 seconds

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src/encoding/router_encoder.rs

@@ -2,11 +2,10 @@ use crate::encoding::{
     errors::EncodingError,
     models::{Solution, Transaction},
     strategy_encoder::StrategySelector,
-    user_approvals_manager::UserApprovalsManager,
 };
 
 #[allow(dead_code)]
-pub trait RouterEncoder<S: StrategySelector, A: UserApprovalsManager> {
+pub trait RouterEncoder<S: StrategySelector> {
     fn encode_router_calldata(
         &self,
         solutions: Vec<Solution>,