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

ui/ozone/platform/drm/gpu/mock_scanout_buffer_generator.h

Index: ui/ozone/platform/drm/gpu/mock_scanout_buffer_generator.h
diff --git a/ui/ozone/platform/drm/gpu/mock_scanout_buffer_generator.h b/ui/ozone/platform/drm/gpu/mock_scanout_buffer_generator.h
index 2cb3161abafdce704dbab24c9401a20ca93c0f34..fde77e3ba0f810d42827e2282467d50ac0f1e9b8 100644
--- a/ui/ozone/platform/drm/gpu/mock_scanout_buffer_generator.h
+++ b/ui/ozone/platform/drm/gpu/mock_scanout_buffer_generator.h
@@ -21,12 +21,6 @@
                                       uint32_t format,
                                       const gfx::Size& size) override;
 
-  scoped_refptr<ScanoutBuffer> CreateWithModifier(
-      const scoped_refptr<DrmDevice>& drm,
-      uint32_t format,
-      uint64_t modifier,
-      const gfx::Size& size);
-
   void set_allocation_failure(bool allocation_failure) {
     allocation_failure_ = allocation_failure;
   }