Revert of Add NV12 buffer scanout support from exo to ozone.

gpu/command_buffer/service/feature_info.cc

Index: gpu/command_buffer/service/feature_info.cc
diff --git a/gpu/command_buffer/service/feature_info.cc b/gpu/command_buffer/service/feature_info.cc
index 4ce5c2d52e1df4e82416aaf2106195f4ea14c8f5..6e81ab67bb16f6c40c3775b676c2420785689b79 100644
--- a/gpu/command_buffer/service/feature_info.cc
+++ b/gpu/command_buffer/service/feature_info.cc
@@ -1011,12 +1011,6 @@
     AddExtensionString("GL_CHROMIUM_ycbcr_420v_image");
     feature_flags_.chromium_image_ycbcr_420v = true;
   }
-
-#elif defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY)
-  // TODO(dcastagna): Determine this feature at runtime querying minigbm.
-  // crbug.com/646148
-  AddExtensionString("GL_CHROMIUM_ycbcr_420v_image");
-  feature_flags_.chromium_image_ycbcr_420v = true;
 #endif
 
   if (extensions.Contains("GL_APPLE_ycbcr_422")) {