refactor notifications

include/services/dbus/mpris.hpp

@@ -1,20 +1,10 @@
 #pragma once
 
 #include <giomm.h>
-#include <string>
 #include <vector>
 
 class MprisController {
   public:
-    struct MprisPlayer2Message {
-        std::string title;
-        std::string artist;
-        std::string artwork_url;
-
-        std::function<void()> play_pause;
-        std::function<void()> next;
-        std::function<void()> previous;
-    };
 
     MprisController();