check_ethernet: Remove check for lab machines

The check whether a DUT is a lab machine is now done in the recover_duts
init snippet.

BUG=chromium:881932
TEST=see CL:1217825
CQ-DEPEND=CL:1217825

Change-Id: I843b8dbaab181175efc408c39dbd5daf20b8a30c
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1217723
Reviewed-by: Douglas Anderson <dianders@chromium.org>
diff --git a/recover_duts/hooks/check_ethernet.hook b/recover_duts/hooks/check_ethernet.hook
index 6df1727..94fd7cf 100755
--- a/recover_duts/hooks/check_ethernet.hook
+++ b/recover_duts/hooks/check_ethernet.hook
@@ -7,12 +7,6 @@
 
 set -e
 
-# Only run this script on test machines that run in the lab.
-# See autotest/server/hosts/site_host.py for more information.
-if [ ! -f /mnt/stateful_partition/.labmachine ]; then
-  exit 0
-fi
-
 SHILL_START_LOCK_PATH="/var/lock/shill-start.lock"
 
 # See code in src/thirdparty/autotest/files/client/cros/power_suspend.py