Remove unused "layer" argument from show().

Change-Id: I795edb8889bbacdf20fc54d755034040295f281a
diff --git a/services/input/SpriteController.cpp b/services/input/SpriteController.cpp
index 8bb9d7f..1f3d2cf 100644
--- a/services/input/SpriteController.cpp
+++ b/services/input/SpriteController.cpp
@@ -298,7 +298,7 @@
             }
 
             if (becomingVisible) {
-                status = update.state.surfaceControl->show(surfaceLayer);
+                status = update.state.surfaceControl->show();
                 if (status) {
                     ALOGE("Error %d showing sprite surface.", status);
                 } else {