Remove D3D12

Source/Core/VideoBackends/D3D12/VideoBackend.h

@@ -1,30 +0,0 @@
-// Copyright 2011 Dolphin Emulator Project
-// Licensed under GPLv2+
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <string>
-#include "VideoCommon/VideoBackendBase.h"
-
-namespace DX12
-{
-class VideoBackend : public VideoBackendBase
-{
-  bool Initialize(void*) override;
-  void Shutdown() override;
-
-  std::string GetName() const override;
-  std::string GetDisplayName() const override;
-
-  void Video_Prepare() override;
-  void Video_Cleanup() override;
-
-  void InitBackendInfo() override;
-
-  unsigned int PeekMessages() override;
-
-private:
-  void* m_window_handle;
-};
-}