[gtk] opbuffer: Remove unused op member

[Timm Bäder <baedert src gnome org>]

commit b91913d10d7f7cab6225d227e9a938976d2a37c2
Author: Timm Bäder <mail baedert org>
Date:   Sat Nov 30 12:43:49 2019 +0100

    opbuffer: Remove unused op member

 gsk/gl/opbuffer.h | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/gsk/gl/opbuffer.h b/gsk/gl/opbuffer.h
index 5124291628..ed40775878 100644
--- a/gsk/gl/opbuffer.h
+++ b/gsk/gl/opbuffer.h
@@ -133,7 +133,6 @@ typedef struct
   float outline[4];
   float corner_widths[4];
   float corner_heights[4];
-  float radius;
   float spread;
   float offset[2];
   float color[4];