Stop collecting intentional crash by logging_*

TEST=test_that logging_UserCrash  # No longer see INFO New Crash Dump
BUG=chromium:619171

Change-Id: I8758a0fc32c277d6255da7a3b5df5406e8d1ffbe
Reviewed-on: https://chromium-review.googlesource.com/367540
Commit-Ready: Victor Hsieh <victorhsieh@chromium.org>
Tested-by: Victor Hsieh <victorhsieh@chromium.org>
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Simran Basi <sbasi@chromium.org>
diff --git a/client/cros/crash_test.py b/client/cros/crash_test.py
index 23ed62a..09f4c24 100644
--- a/client/cros/crash_test.py
+++ b/client/cros/crash_test.py
@@ -694,3 +694,7 @@
 
             # Call the test function
             getattr(self, '_test_' + test_name)()
+
+        # Clear the intentional crashes, so that the server won't automatically
+        # report crash as failure.
+        self._clear_spooled_crashes()