Revert of Add format modifier IDs for EGL_EXT_image_dma_buf_import extension

ui/gfx/native_pixmap_handle_ozone.cc

Index: ui/gfx/native_pixmap_handle_ozone.cc
diff --git a/ui/gfx/native_pixmap_handle_ozone.cc b/ui/gfx/native_pixmap_handle_ozone.cc
index 8bd17bcb6ac62f8c6480ccea73fe40c584061d4c..d48e36fd7600977a901c3a9c3c761595bdd3555d 100644
--- a/ui/gfx/native_pixmap_handle_ozone.cc
+++ b/ui/gfx/native_pixmap_handle_ozone.cc
@@ -6,15 +6,6 @@
 
 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;