cros: crash_test: Adapt to new crash-reporter interface

After CL:335262 --nounclean_check is no longer used by crash_reporter
--init. Delete it.

CQ-DEPEND=CL:335263
BUG=chromium:595531
TEST=logging_UserCrash

Change-Id: Ie7d6be3df7b451370d1b2f68fcec5b90b3b83a95
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/335294
diff --git a/client/cros/crash_test.py b/client/cros/crash_test.py
index fcfae23..23ed62a 100644
--- a/client/cros/crash_test.py
+++ b/client/cros/crash_test.py
@@ -315,7 +315,7 @@
 
     def _initialize_crash_reporter(self):
         """Start up the crash reporter."""
-        utils.system('%s --init --nounclean_check' % self._CRASH_REPORTER_PATH)
+        utils.system('%s --init' % self._CRASH_REPORTER_PATH)
         # Completely disable crash_reporter from generating crash dumps
         # while any tests are running, otherwise a crashy system can make
         # these tests flaky.