feat: Simplify StrategyEncoders and RouterEncoder

No more SingleSwapStrategyEncoder or SequentialStrategyEncoder
No more batch routing (so no need for batch permits as well). If multiple solutions are found, return multiple Transactions

--- don't change below this line ---
ENG-4076 <#DTT#>

src/encoding/evm/strategy_encoder/selector.rs

@@ -1,8 +1,5 @@
 use crate::encoding::{
-    evm::strategy_encoder::encoder::{
-        SequentialStrategyEncoder, SingleSwapStrategyEncoder, SplitSwapStrategyEncoder,
-        StraightToPoolStrategyEncoder,
-    },
+    evm::strategy_encoder::encoder::{SplitSwapStrategyEncoder, StraightToPoolStrategyEncoder},
     models::Solution,
     strategy_encoder::{StrategyEncoder, StrategySelector},
 };
@@ -13,14 +10,6 @@ impl StrategySelector for EVMStrategySelector {
     fn select_strategy(&self, solution: &Solution) -> Box<dyn StrategyEncoder> {
         if solution.straight_to_pool {
             Box::new(StraightToPoolStrategyEncoder {})
-        } else if solution.swaps.len() == 1 {
-            Box::new(SingleSwapStrategyEncoder {})
-        } else if solution
-            .swaps
-            .iter()
-            .all(|s| s.split == 0.0)
-        {
-            Box::new(SequentialStrategyEncoder {})
         } else {
             Box::new(SplitSwapStrategyEncoder {})
         }