Revert of Add vulkan files into skia repo.

src/gpu/vk/GrVkSampler.h

-/*
-* Copyright 2016 Google Inc.
-*
-* Use of this source code is governed by a BSD-style license that can be
-* found in the LICENSE file.
-*/
-
-#ifndef GrVkSampler_DEFINED
-#define GrVkSampler_DEFINED
-
-#include "GrVkResource.h"
-
-#include "vulkan/vulkan.h"
-
-class GrTextureAccess;
-class GrVkGpu;
-
-
-class GrVkSampler : public GrVkResource {
-public:
-    static GrVkSampler* Create(const GrVkGpu* gpu, const GrTextureAccess& textureAccess);
-
-    VkSampler sampler() const { return fSampler; }
-
-private:
-    GrVkSampler(VkSampler sampler) : INHERITED(), fSampler(sampler) {}
-
-    void freeGPUData(const GrVkGpu* gpu) const override;
-
-    VkSampler  fSampler;
-
-    typedef GrVkResource INHERITED;
-};
-
-#endif