Remove spammy "Network distribution disabled" message from default config

tools/run-tests.py

 #!/usr/bin/env python
 #
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 650 matching lines @@
   if options.junitout:
     progress_indicator.Register(progress.JUnitTestProgressIndicator(
         options.junitout, options.junittestsuite))
   if options.json_test_results:
     progress_indicator.Register(progress.JsonTestProgressIndicator(
         options.json_test_results, arch, MODES[mode]["execution_mode"],
         ctx.random_seed))
 
   run_networked = not options.no_network
   if not run_networked:
-    print("Network distribution disabled, running tests locally.")
+    if verbose_output:
+      print("Network distribution disabled, running tests locally.")
   elif utils.GuessOS() != "linux":
     print("Network distribution is only supported on Linux, sorry!")
     run_networked = False
   peers = []
   if run_networked:
     peers = network_execution.GetPeers()
     if not peers:
       print("No connection to distribution server; running tests locally.")
       run_networked = False
     elif len(peers) == 1:
@@ skipping 12 matching lines @@
   exit_code = runner.Run(options.j)
   overall_duration = time.time() - start_time
 
   if options.time:
     verbose.PrintTestDurations(suites, overall_duration)
   return exit_code
 
 
 if __name__ == "__main__":
   sys.exit(Main())