[test] Remove temporary debug output

The extra output on mac was to investigate a bug that's now fixed.

TBR=sergiyb@chromium.org
NOTRY=true

Bug: v8:6927
Change-Id: Iac8074c7e89a987e164f676442da1ed4f93987cc
Reviewed-on: https://chromium-review.googlesource.com/880623Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50787}

tools/testrunner/standard_runner.py

@@ -110,17 +110,6 @@ class StandardTestRunner(base_runner.BaseTestRunner):
         # Swarming doesn't print how isolated commands are called. Lets make
         # this less cryptic by printing it ourselves.
         print ' '.join(sys.argv)
-
-        if utils.GuessOS() == "macos":
-          # TODO(machenbach): Temporary output for investigating hanging test
-          # driver on mac.
-          print "V8 related processes running on this host:"
-          try:
-            print subprocess.check_output(
-              "ps -e | egrep 'd8|cctest|unittests'", shell=True)
-          except Exception:
-            pass
-
       return self._execute(args, options, suites)
 
     def _add_parser_options(self, parser):