Android: Remove unnecessary ANativeWindow_release call

This is already handled by SurfaceDestroyed. In the worst case,
the extra code could even race with SurfaceDestroyed if they
are triggered at the same time, but this is highly improbable.

Source/Android/jni/MainAndroid.cpp

@@ -543,12 +543,6 @@ static void Run(JNIEnv* env, const std::vector<std::string>& paths,
   ButtonManager::Shutdown();
   host_identity_guard.unlock();
 
-  if (s_surf)
-  {
-    ANativeWindow_release(s_surf);
-    s_surf = nullptr;
-  }
-
   env->CallStaticVoidMethod(IDCache::GetNativeLibraryClass(),
                             IDCache::GetFinishEmulationActivity());
 }