set default slg_scale to 0 (oops)

examples/cli/main.cpp

@@ -121,7 +121,7 @@ struct SDParams {
     int upscale_repeats           = 1;
 
     std::vector<int> skip_layers = {7, 8, 9};
-    float slg_scale              = 2.5;
+    float slg_scale              = 0.;
     float skip_layer_start       = 0.01;
     float skip_layer_end         = 0.2;
 };