[tools] Stop passing ensure_logs_on_timeout since it defaults to True now

TBR=machenbach@chromium.org

Bug: chromium:899721
Change-Id: Ifdb4864e47a56cb0fe2565e44e79f3def496b138
Reviewed-on: https://chromium-review.googlesource.com/c/1317821
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57253}

tools/testrunner/local/android.py

@@ -167,7 +167,6 @@ class _Driver(object):
             env=env,
             timeout=timeout,
             retries=0,
-            ensure_logs_on_timeout=True,
         )
         return '\n'.join(output)
       except device_errors.AdbCommandFailedError as e: