[librsvg] Remove unused variable

[Federico Mena Quintero <federico src gnome org>]

commit dad5c17c7f1db91298e8e0ec2743507ee0ea1cde
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Sep 5 10:44:51 2018 -0500

    Remove unused variable

 rsvg_internals/src/pattern.rs | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/rsvg_internals/src/pattern.rs b/rsvg_internals/src/pattern.rs
index a259ffed..5248778b 100644
--- a/rsvg_internals/src/pattern.rs
+++ b/rsvg_internals/src/pattern.rs
@@ -343,8 +343,6 @@ fn set_pattern_on_draw_context(
 
     let mut caffine: cairo::Matrix;
 
-    let pushed_view_box: bool;
-
     // Create the pattern contents coordinate system
     let _params = if let Some(vbox) = vbox {
         // If there is a vbox, use that