Remove unecessary exported symbols from libhwui.so

Test: compiles and links
Bug: 150782769
Change-Id: Ib49c1bf914b6bfaad1fb29371115df7c9eec08d2
diff --git a/libs/hwui/AnimatorManager.h b/libs/hwui/AnimatorManager.h
index 9575391..a0df01d 100644
--- a/libs/hwui/AnimatorManager.h
+++ b/libs/hwui/AnimatorManager.h
@@ -54,7 +54,7 @@
     void animateNoDamage(TreeInfo& info);
 
     // Hard-ends all animators. May only be called on the UI thread.
-    ANDROID_API void endAllStagingAnimators();
+    void endAllStagingAnimators();
 
     // Hard-ends all animators that have been pushed. Used for cleanup if
     // the ActivityContext is being destroyed