lint: clean up use of \ as line continuation

We prefer hanging indents over \ whenever possible.  Clean things up
to use hanging indents or specific () or even omit things entirely as
the code as-is doesn't need the explicit \.

BUG=None
TEST=`cros lint` is clean & `./run_tests` passes

Change-Id: I03dbdeaba11c159a6a6ad2399037643fea361407
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2766442
Reviewed-by: Sergey Frolov <sfrolov@google.com>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/deploy_chrome_unittest.py b/scripts/deploy_chrome_unittest.py
index a81ac8c..3ba6340 100644
--- a/scripts/deploy_chrome_unittest.py
+++ b/scripts/deploy_chrome_unittest.py
@@ -168,9 +168,8 @@
     self.deploy = self._GetDeployChrome(list(_REGULAR_TO) +
                                         ['--board', _TARGET_BOARD, '--gs-path',
                                          _GS_PATH, '--force', '--mount'])
-    self.remote_reboot_mock = \
-      self.PatchObject(remote_access.RemoteAccess, 'RemoteReboot',
-                       return_value=True)
+    self.remote_reboot_mock = self.PatchObject(
+        remote_access.RemoteAccess, 'RemoteReboot', return_value=True)
 
 
 class TestCheckIfBoardMatches(DeployTest):