Remove sync flush

 Bug: 13952590
 It was attempting to flush state changes after the canvas was
 destroyed, which caused layer updates to crash.

 Due to the removal of SetDisplayListData, the sync mode isn't able
 to do anything ever, so remove it.

Change-Id: I1e18ce288d81fd47cc6e612afda9476f75ecef2e
diff --git a/libs/hwui/DeferredLayerUpdater.cpp b/libs/hwui/DeferredLayerUpdater.cpp
index c64c169..8b23955 100644
--- a/libs/hwui/DeferredLayerUpdater.cpp
+++ b/libs/hwui/DeferredLayerUpdater.cpp
@@ -41,6 +41,7 @@
 
 DeferredLayerUpdater::~DeferredLayerUpdater() {
     SkSafeUnref(mColorFilter);
+    setTransform(0);
     if (mLayer) {
         mCaches.resourceCache.decrementRefcount(mLayer);
     }