Warnings: remove empty code (#6577)

* Warnings: remove empty code

src/slic3r/GUI/IMSlider.cpp

@@ -240,10 +240,6 @@ void IMSlider::SetTicksValues(const Info &custom_gcode_per_print_z)
         if (tick >= 0) m_ticks.ticks.emplace(TickCode{tick, h.type, h.extruder, h.color, h.extra});
     }
 
-    if (!was_empty && m_ticks.empty())
-        // Switch to the "Feature type"/"Tool" from the very beginning of a new object slicing after deleting of the old one
-        ;// post_ticks_changed_event();
-
     if (m_ticks.has_tick_with_code(ToolChange) && !m_can_change_color) {
         if (!wxGetApp().plater()->only_gcode_mode() && !wxGetApp().plater()->using_exported_file())
         {