refactor(menu): remove unnecessary blank line in menu builder

Author: s00d

crates/tauri/src/menu/builders/menu.rs

@@ -200,7 +200,6 @@ impl<'m, R: Runtime, M: Manager<R>> SubmenuBuilder<'m, R, M> {
       Submenu::new(self.manager, self.text, self.enabled)?
     };
 
-
     for item in self.items {
       let item = item?;
       submenu.append(&item)?;