Remove useFramebufferCache parameter in drawLayers()

GLESRenderEngine used it, but GLESRenderEngine is no more.

Bug: 199918329
Test: builds
Change-Id: Id4fcc15d802523faa548ccea0bbd94cffea1b272
diff --git a/libs/renderengine/threaded/RenderEngineThreaded.h b/libs/renderengine/threaded/RenderEngineThreaded.h
index a7ecab2..43ec011 100644
--- a/libs/renderengine/threaded/RenderEngineThreaded.h
+++ b/libs/renderengine/threaded/RenderEngineThreaded.h
@@ -55,7 +55,6 @@
     ftl::Future<FenceResult> drawLayers(const DisplaySettings& display,
                                         const std::vector<LayerSettings>& layers,
                                         const std::shared_ptr<ExternalTexture>& buffer,
-                                        const bool useFramebufferCache,
                                         base::unique_fd&& bufferFence) override;
 
     int getContextPriority() override;
@@ -72,7 +71,7 @@
                             const DisplaySettings& display,
                             const std::vector<LayerSettings>& layers,
                             const std::shared_ptr<ExternalTexture>& buffer,
-                            const bool useFramebufferCache, base::unique_fd&& bufferFence) override;
+                            base::unique_fd&& bufferFence) override;
 
 private:
     void threadMain(CreateInstanceFactory factory);