Delete unused args

Bug: 21170575
Change-Id: Icc832f70f206342557f44667ad3498405d04db78
diff --git a/libs/hwui/renderthread/CanvasContext.h b/libs/hwui/renderthread/CanvasContext.h
index a6eb7ad..2a4e616 100644
--- a/libs/hwui/renderthread/CanvasContext.h
+++ b/libs/hwui/renderthread/CanvasContext.h
@@ -85,7 +85,7 @@
     void setStopped(bool stopped);
     bool hasSurface() { return mNativeSurface.get(); }
 
-    void setup(int width, int height, float lightRadius,
+    void setup(float lightRadius,
             uint8_t ambientShadowAlpha, uint8_t spotShadowAlpha);
     void setLightCenter(const Vector3& lightCenter);
     void setOpaque(bool opaque);