[librsvg] NodeUse: draw_in_viewport() already pushes a layer; no need to push another one

[Federico Mena Quintero <federico src gnome org>]

commit 953cd157c1af54d553276fef52253257e18f38cf
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Jun 15 20:41:54 2018 -0500

    NodeUse: draw_in_viewport() already pushes a layer; no need to push another one

 rsvg_internals/src/structure.rs | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/rsvg_internals/src/structure.rs b/rsvg_internals/src/structure.rs
index 95c2e371..63a9c852 100644
--- a/rsvg_internals/src/structure.rs
+++ b/rsvg_internals/src/structure.rs
@@ -352,7 +352,6 @@ impl NodeTrait for NodeUse {
                     draw_ctx,
                     clipping,
                     || {
-                        drawing_ctx::push_discrete_layer(draw_ctx, values, clipping);
                         child.draw_children(
                             &child,
                             &CascadedValues::new_from_values(&child, values),
@@ -360,7 +359,6 @@ impl NodeTrait for NodeUse {
                             false,
                             clipping,
                         );
-                        drawing_ctx::pop_discrete_layer(draw_ctx, node, values, clipping);
                     },
                 );
             });