fix circular dependency libnativewindow <-> libui

Bug: 37647680
Bug: 37648355
Test: compile, manual
Change-Id: Ib13fe0ad32d6b4ebfc726003ffb65cb5887e24f9
diff --git a/libs/nativewindow/include/system/window.h b/libs/nativewindow/include/system/window.h
index 42ef075..6429c52 100644
--- a/libs/nativewindow/include/system/window.h
+++ b/libs/nativewindow/include/system/window.h
@@ -530,7 +530,6 @@
  /* Backwards compatibility: use ANativeWindow (struct ANativeWindow in C).
   * android_native_window_t is deprecated.
   */
-typedef struct ANativeWindow ANativeWindow;
 typedef struct ANativeWindow android_native_window_t __deprecated;
 
 /*