window: adjust code and delete useless code

1. adjust code.
2. delete useless annotation

src/anbox/platform/sdl/platform.cpp

@@ -511,7 +511,6 @@ std::shared_ptr<wm::Window> Platform::create_window(
   auto id = next_window_id();
   auto w = std::make_shared<Window>(renderer_, id, task, shared_from_this(), frame, title, !window_size_immutable_);
   focused_sdl_window_id_ = w->window_id();
-  printf("Insert id:%d, %d\n", id, task);
   windows_.insert({id, w});
   return w;
 }
@@ -524,7 +523,6 @@ void Platform::window_deleted(const Window::Id &id) {
   }
   if (auto window = w->second.lock())
     window_manager_->remove_task(window->task());
-  printf("Remove id:%d\n", id);
   windows_.erase(w);
 }
 

src/anbox/platform/sdl/window.cpp

@@ -267,7 +267,6 @@ void Window::process_event(const SDL_Event &event) {
     case SDL_WINDOWEVENT_CLOSE:
       if (observer_)
         observer_->window_deleted(id_);
-
       close();
       break;
     default:

src/anbox/wm/multi_window_manager.cpp

@@ -61,7 +61,7 @@ void MultiWindowManager::apply_window_state_update(const WindowState::List &upda
     }
 
     if (window.frame().width() == 0 || window.frame().height() == 0) {
-        continue;
+      continue;
     }
 
     auto title = window.package_name();
@@ -135,11 +135,11 @@ void MultiWindowManager::insert_task(const Task::Id &task, std::shared_ptr<wm::W
 }
 
 void MultiWindowManager::erase_task(const Task::Id &task) {
-  std::lock_guard<std::mutex>l(mutex_);
+  std::lock_guard<std::mutex> l(mutex_);
   auto it = windows_.find(task);
   if (it != windows_.end()) {
     windows_.erase(it);
   }
-} 
+}
 }  // namespace wm
 }  // namespace anbox