Improve readability and remove redundant code

src/search/negamax.rs

@@ -22,7 +22,7 @@ pub fn negamax(
     let (mut best_move, mut best_score, mate_score) = (None, MIN_SCORE, -MATE_SCORE + plies as i32);
     let mut legal_moves = 0;
 
-    for mv in game.board.pseudo_moves_all(color) {
+    for mv in game.board.pseudo_moves_all() {
         let move_parameters = MoveParameters::build(&game.board, &mv);
         game.board.make_move(&mv);