Disable arc USE flag on some boards

BUG=None
TEST=None

Change-Id: I1c106e51ed1b21767737f8ba3feee9aa1604e0b4
Reviewed-on: https://chromium-review.googlesource.com/526779
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Commit-Queue: Bernie Thompson <bhthompson@chromium.org>
Tested-by: Bernie Thompson <bhthompson@chromium.org>
diff --git a/overlay-bob/profiles/base/make.defaults b/overlay-bob/profiles/base/make.defaults
index 2c83532..fee7b60 100644
--- a/overlay-bob/profiles/base/make.defaults
+++ b/overlay-bob/profiles/base/make.defaults
@@ -6,7 +6,6 @@
 USE=""
 
 USE="${USE} bob"
-USE="${USE} arc"
 
 # Disable touchpad wakeup since it can't be turned off dynamically when the
 # system is converted to tablet mode while it's suspended.
diff --git a/overlay-cave/make.conf b/overlay-cave/make.conf
index 4942bd1..c9c3ace 100644
--- a/overlay-cave/make.conf
+++ b/overlay-cave/make.conf
@@ -8,8 +8,6 @@
 # NOTE: Deprecating feature. New board should NOT have it.
 USE="${USE} allow_consumer_kiosk"
 
-USE="${USE} arc"
-
 # Avoid inhibiting the keyboard (which reports events from side buttons).
 USE="${USE} keyboard_includes_side_buttons"
 
diff --git a/overlay-chell/make.conf b/overlay-chell/make.conf
index 1397ebe..8de109a 100644
--- a/overlay-chell/make.conf
+++ b/overlay-chell/make.conf
@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 USE="${USE} chell cros_ec has_keyboard_backlight pd_sync"
-USE="${USE} arc"
 
 # Allow consumer kiosk.
 # NOTE: Deprecating feature. New board should NOT have it.
diff --git a/overlay-elm/make.conf b/overlay-elm/make.conf
index e4388af..5c21aad 100644
--- a/overlay-elm/make.conf
+++ b/overlay-elm/make.conf
@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 USE="${USE} touchview"
-USE="${USE} arc"
 
 # Allow consumer kiosk.
 # NOTE: Deprecating feature. New board should NOT have it.