Merge pull request swiftlang#546 from ahoppen/pr/continue-stress-tester-on-error

[Stress Tester XFails] Add new XFails found by continuing the stress tester on error

Author: shahmishal

run_sk_stress_test

@@ -244,7 +244,6 @@ class StressTesterRunner(object):
             'SK_STRESS_OUTPUT': results,
             'SK_XFAILS_PATH': self.xfails_path,
             'SK_STRESS_ACTIVE_CONFIG': self.swift_branch,
-            'SK_STRESS_SUPPRESS_OUTPUT': 'true',
             'SK_STRESS_REWRITE_MODES': 'none concurrent insideout',
             'SK_STRESS_REQUEST_DURATIONS_FILE': request_durations,
         }