diff --git a/system_tests/monitoring.py b/system_tests/monitoring.py
index 16d342bfaa4b..0a41744b9376 100644
--- a/system_tests/monitoring.py
+++ b/system_tests/monitoring.py
@@ -29,7 +29,6 @@
 retry_500 = RetryErrors(InternalServerError)
 retry_503 = RetryErrors(ServiceUnavailable)
 
-
 def _has_timeseries(result):
     """Return True if a time series query has non-empty results."""
     return len(list(result)) > 0
@@ -37,11 +36,8 @@ def _has_timeseries(result):
 UNKNOWN_METRIC_ERROR = ('The provided filter doesn\'t refer to any known '
                         'metric.')
 
-
 def _unknown_metric(result):
     """Return True if the error describes writing to an unknown metric.."""
-    import sys
-    sys.stderr.write("WOW %s " % result.args)
     return UNKNOWN_METRIC_ERROR in result.message