[librsvg/wip/dimensions-api] draw_in_viewport(): Remove unneccessary call to set_matrix()

[Federico Mena Quintero <federico src gnome org>]

commit 4789f5f369fbedde33c370d103724b632135ff4d
Author: Federico Mena Quintero <federico gnome org>
Date:   Sat Feb 9 11:20:42 2019 -0600

    draw_in_viewport(): Remove unneccessary call to set_matrix()
    
    From all callers, this function is being passed the DrawingCtx's
    current matrix; there's no need to re-set it from itself.

 rsvg_internals/src/viewport.rs | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/rsvg_internals/src/viewport.rs b/rsvg_internals/src/viewport.rs
index 4dec4bae..edcdb8ac 100644
--- a/rsvg_internals/src/viewport.rs
+++ b/rsvg_internals/src/viewport.rs
@@ -40,7 +40,6 @@ pub fn draw_in_viewport(
     draw_ctx.with_discrete_layer(node, values, clipping, &mut |dc| {
         if let Some(ref clip) = clip_mode {
             if *clip == ClipMode::ClipToViewport {
-                dc.get_cairo_context().set_matrix(affine);
                 dc.clip(viewport.x, viewport.y, viewport.width, viewport.height);
             }
         }