refactor(tray icon): update header definitions (#1221)

src/main.h

@@ -33,20 +33,6 @@ main(int argc, char *argv[]);
 void
 log_flush();
 void
-open_url(const std::string &url);
-void
-tray_open_ui_cb(struct tray_menu *item);
-void
-tray_donate_github_cb(struct tray_menu *item);
-void
-tray_donate_mee6_cb(struct tray_menu *item);
-void
-tray_donate_patreon_cb(struct tray_menu *item);
-void
-tray_donate_paypal_cb(struct tray_menu *item);
-void
-tray_quit_cb(struct tray_menu *item);
-void
 print_help(const char *name);
 std::string
 read_file(const char *path);

src/system_tray.h

@@ -1,8 +1,6 @@
 /**
-* @file system_tray.h
+ * @file system_tray.h
-*/
+ */
-// macros
-#if defined SUNSHINE_TRAY && SUNSHINE_TRAY >= 1
 
 // system_tray namespace
 namespace system_tray {
@@ -30,4 +28,3 @@ namespace system_tray {
   end_tray();
 
 }  // namespace system_tray
-#endif