support Klipper Exclude objects natively.

Also remove fake slicer info

src/slic3r/GUI/ConfigManipulation.cpp

@@ -697,6 +697,9 @@ void ConfigManipulation::toggle_print_fff_options(DynamicPrintConfig *config, co
         toggle_line(el, gcflavor == gcfKlipper);
     if(gcflavor == gcfKlipper)
         toggle_field("accel_to_decel_factor", config->opt_bool("accel_to_decel_enable"));
+
+    toggle_field("exclude_object", gcflavor == gcfKlipper);
+
 }
 
 void ConfigManipulation::update_print_sla_config(DynamicPrintConfig* config, const bool is_global_config/* = false*/)