tidy method calls

- Reformatted method calls in RemoveFormula and SetAxis for consistency.
- Minor formatting changes to improve readability.

Co-Authored-By: fiddlerwoaroof/git-smart-commit (gpt-oss:20b)

src/ui/effect.rs

@@ -85,7 +85,8 @@ pub struct RemoveFormula {
 }
 impl Effect for RemoveFormula {
     fn apply(&self, app: &mut App) {
-        app.model.remove_formula(&self.target, &self.target_category);
+        app.model
+            .remove_formula(&self.target, &self.target_category);
     }
 }
 
@@ -122,7 +123,9 @@ pub struct SetAxis {
 }
 impl Effect for SetAxis {
     fn apply(&self, app: &mut App) {
-        app.model.active_view_mut().set_axis(&self.category, self.axis);
+        app.model
+            .active_view_mut()
+            .set_axis(&self.category, self.axis);
     }
 }
 
@@ -278,14 +281,6 @@ impl Effect for SetSearchMode {
     }
 }
 
-#[derive(Debug)]
-pub struct SetPendingKey(pub Option<char>);
-impl Effect for SetPendingKey {
-    fn apply(&self, app: &mut App) {
-        app.pending_key = self.0;
-    }
-}
-
 // ── Side effects ─────────────────────────────────────────────────────────────
 
 #[derive(Debug)]