cheets_CTS_P/Instant: More quiet output.

With crrev.com/c/2354743, our result parser is no more
relying on the verbose output. Let's reduce the log
output size.

Besides, a debug log I forgot to remove is also deleted.

BUG=b:151386998
TEST=cheets_CTS_P.9.0_r13.arm.CtsUsbTests

Change-Id: I3d37b43bb59fc4787755089c7fb22cc1818508f4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2494203
Tested-by: Kazuhiro Inaba <kinaba@chromium.org>
Auto-Submit: Kazuhiro Inaba <kinaba@chromium.org>
Commit-Queue: Kazuhiro Inaba <kinaba@chromium.org>
Commit-Queue: Jaydeep Mehta <jaydeepmehta@google.com>
Reviewed-by: Jaydeep Mehta <jaydeepmehta@google.com>
diff --git a/server/site_tests/cheets_CTS_Instant/cheets_CTS_Instant.py b/server/site_tests/cheets_CTS_Instant/cheets_CTS_Instant.py
index e696ce8..7bb2455 100644
--- a/server/site_tests/cheets_CTS_Instant/cheets_CTS_Instant.py
+++ b/server/site_tests/cheets_CTS_Instant/cheets_CTS_Instant.py
@@ -75,6 +75,8 @@
                                                     stderr=subprocess.STDOUT))
                 except OSError:
                     logging.error('Can\'t change current PATH directory')
+        # Suppress redundant output from tradefed.
+        cmd.append('--quiet-output=true')
         return cmd
 
     def _get_default_bundle_url(self, bundle):
diff --git a/server/site_tests/cheets_CTS_P/cheets_CTS_P.py b/server/site_tests/cheets_CTS_P/cheets_CTS_P.py
index 9d7e383..37188bf 100644
--- a/server/site_tests/cheets_CTS_P/cheets_CTS_P.py
+++ b/server/site_tests/cheets_CTS_P/cheets_CTS_P.py
@@ -72,11 +72,8 @@
                 except OSError:
                     logging.error('Can\'t change current PATH directory')
 
-        elif self._timeout <= 3600:
-            # TODO(kinaba): remove once crbug.com/1041833 is resolved.
-            logging.info('Add more debug log for small modules')
-            cmd.append('--log-level-display=VERBOSE')
-
+        # Suppress redundant output from tradefed.
+        cmd.append('--quiet-output=true')
         return cmd
 
     def _get_default_bundle_url(self, bundle):