Disable arc USE flag on various systems

BUG=None
TEST=None

Change-Id: Ibcc24ab9296a998f137da9a663d121a71745f37f
Reviewed-on: https://chromium-review.googlesource.com/492030
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-caroline/make.conf b/overlay-caroline/make.conf
index f152cc6..7294ee9 100644
--- a/overlay-caroline/make.conf
+++ b/overlay-caroline/make.conf
@@ -5,7 +5,6 @@
 
 USE="${USE} caroline cros_ec pd_sync touchview"
 USE="${USE} edge_touch_filtering"
-USE="${USE} arc"
 
 # All firmwares to build from the EC code base
 EC_FIRMWARE="caroline"
diff --git a/overlay-cave/make.conf b/overlay-cave/make.conf
index 20e4a5e..43ad352 100644
--- a/overlay-cave/make.conf
+++ b/overlay-cave/make.conf
@@ -8,7 +8,5 @@
 # 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 cade273..3f6290a 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.
diff --git a/overlay-reef/make.conf b/overlay-reef/make.conf
index a53edf2..0e6c398 100644
--- a/overlay-reef/make.conf
+++ b/overlay-reef/make.conf
@@ -4,7 +4,6 @@
 
 
 USE="${USE} reef touchview cros_ec"
-USE="${USE} arc"
 
 # Enable CR50 TPM 2.0 functionality
 USE="${USE} -tpm tpm2 cr50_onboard"