Revert of Add format modifier IDs for EGL_EXT_image_dma_buf_import extension

ui/gfx/native_pixmap_handle_ozone.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gfx/native_pixmap_handle_ozone.h"
 
 namespace gfx {
 
-NativePixmapPlane::NativePixmapPlane() : stride(0), offset(0), modifier(0) {}
-
-NativePixmapPlane::NativePixmapPlane(int stride, int offset, uint64_t modifier)
-    : stride(stride), offset(offset), modifier(modifier) {}
-
-NativePixmapPlane::NativePixmapPlane(const NativePixmapPlane& other) = default;
-
-NativePixmapPlane::~NativePixmapPlane() {}
-
 NativePixmapHandle::NativePixmapHandle() {}
 NativePixmapHandle::NativePixmapHandle(const NativePixmapHandle& other) =
     default;
 
 NativePixmapHandle::~NativePixmapHandle() {}
 
 }  // namespace gfx