Revert of ozone/drm: Only reuse ScanoutBuffers with compatible modifiers

ui/ozone/platform/drm/gpu/drm_buffer.cc

Index: ui/ozone/platform/drm/gpu/drm_buffer.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_buffer.cc b/ui/ozone/platform/drm/gpu/drm_buffer.cc
index 784549f665c7e8a629062ac97c08e94dec8d4947..d511661b78b2379f84271aeea7029c2ba68e2dec 100644
--- a/ui/ozone/platform/drm/gpu/drm_buffer.cc
+++ b/ui/ozone/platform/drm/gpu/drm_buffer.cc
@@ -107,10 +107,6 @@
   return fb_pixel_format_;
 }
 
-uint64_t DrmBuffer::GetFormatModifier() const {
-  return DRM_FORMAT_MOD_NONE;
-}
-
 uint32_t DrmBuffer::GetHandle() const {
   return handle_;
 }