Cleanup Snapclient includes

client/client_settings.hpp

@@ -1,6 +1,6 @@
 /***
     This file is part of snapcast
-    Copyright (C) 2014-2020  Johannes Pohl
+    Copyright (C) 2014-2024  Johannes Pohl
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -16,15 +16,16 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#ifndef CLIENT_SETTINGS_HPP
-#define CLIENT_SETTINGS_HPP
-
-#include <string>
-#include <vector>
+#pragma once
 
+// local headers
 #include "common/sample_format.hpp"
 #include "player/pcm_device.hpp"
 
+// standard headers
+#include <string>
+
+
 
 struct ClientSettings
 {
@@ -79,5 +80,3 @@ struct ClientSettings
     Player player;
     Logging logging;
 };
-
-#endif