cros_deploy: Run dlcservice_util in its default user

dlcservice_util enters a minijail already. So no need to explicitly run
it as chronos. Besides, it should not be run as 'chronos'. It should be
run as 'dlcservice' user.

BUG=chromium:1081495
TEST=cros deploy dummy-dlc

Change-Id: Id24b7c4e3b389cdbc9c3d3e4f1dbe0b6feab0faa
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2194893
Tested-by: Amin Hassani <ahassani@chromium.org>
Auto-Submit: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Andrew Lassalle <andrewlassalle@chromium.org>
Reviewed-by: Jae Hoon Kim <kimjae@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
diff --git a/cli/deploy_unittest.py b/cli/deploy_unittest.py
index e5f54f3..82bb72c 100644
--- a/cli/deploy_unittest.py
+++ b/cli/deploy_unittest.py
@@ -415,8 +415,7 @@
 
     self.assertEqual(
         self.device.device.cmds,
-        [['sudo', '-u', 'chronos', 'dlcservice_util',
-          '--uninstall', '--dlc_ids=foodlc'],
+        [['dlcservice_util', '--uninstall', '--dlc_ids=foodlc'],
          ['restart', 'dlcservice']])
 
   def testDeployMergeWithProgressBar(self):