Taskbar: Remove declarations for non-existent methods

Author: https://github.com/AtkinsSJ
Commit: ca85ce6db3
Pull-request: https://github.com/SerenityOS/serenity/pull/17203
Reviewed-by: https://github.com/linusg ✅

Userland/Services/Taskbar/TaskbarWindow.h

@@ -35,7 +35,6 @@ private:
     explicit TaskbarWindow();
     static void show_desktop_button_clicked(unsigned);
     static void toggle_show_desktop();
-    void set_quick_launch_button_data(GUI::Button&, DeprecatedString const&, NonnullRefPtr<Desktop::AppFile>);
     void on_screen_rects_change(Vector<Gfx::IntRect, 4> const&, size_t);
     NonnullRefPtr<GUI::Button> create_button(WindowIdentifier const&);
     void add_window_button(::Window&, WindowIdentifier const&);