Disable arc on M59 beta

Change-Id: I71dbb5617d6bb98cfedfb4bd7bdf423cd44f000d
Reviewed-on: https://chromium-review.googlesource.com/493945
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Tested-by: Grace Kihumba <gkihumba@chromium.org>
diff --git a/overlay-lulu/make.conf b/overlay-lulu/make.conf
index 651fc93..c7f7411 100644
--- a/overlay-lulu/make.conf
+++ b/overlay-lulu/make.conf
@@ -8,4 +8,3 @@
 # NOTE: Deprecating feature. New board should NOT have it.
 USE="${USE} allow_consumer_kiosk"
 
-USE="${USE} arc"