Revert^2 "Second Patch for async RenderEngine"

Keep the change of Second Patch for async RenderEngine and fix the
regression

- remove the vector variables which is to store futureFence locally in
BufferStateLayer to get avoid fd leaking
- screenshots initiated from the app don't wait on the SF main thread.

2109270e74a18585aceffc94d1758cee47bb4175

Bug: 202843200
Bug: 202833127
Bug: 202808760
Test: Wembley PIN setting test, NexusLauncherOutOfProcTests
Change-Id: I87847d01e2e330ddec88272cd8608f0b78c0a2cd
diff --git a/libs/renderengine/threaded/RenderEngineThreaded.h b/libs/renderengine/threaded/RenderEngineThreaded.h
index 2303caa..0159cfa 100644
--- a/libs/renderengine/threaded/RenderEngineThreaded.h
+++ b/libs/renderengine/threaded/RenderEngineThreaded.h
@@ -57,7 +57,7 @@
     void cleanupPostRender() override;
 
     std::future<RenderEngineResult> drawLayers(const DisplaySettings& display,
-                                               const std::vector<const LayerSettings*>& layers,
+                                               const std::vector<LayerSettings>& layers,
                                                const std::shared_ptr<ExternalTexture>& buffer,
                                                const bool useFramebufferCache,
                                                base::unique_fd&& bufferFence) override;
@@ -73,7 +73,7 @@
     bool canSkipPostRenderCleanup() const override;
     void drawLayersInternal(const std::shared_ptr<std::promise<RenderEngineResult>>&& resultPromise,
                             const DisplaySettings& display,
-                            const std::vector<const LayerSettings*>& layers,
+                            const std::vector<LayerSettings>& layers,
                             const std::shared_ptr<ExternalTexture>& buffer,
                             const bool useFramebufferCache, base::unique_fd&& bufferFence) override;