Remove stderr redirect hack from build/download_gold_plugin.py.

build/download_gold_plugin.py

Index: build/download_gold_plugin.py
diff --git a/build/download_gold_plugin.py b/build/download_gold_plugin.py
index d4fb48b2f475503041b0b780305fd40b0904c995..8123167806dda450bb9e2e3685253ca60435a2a3 100755
--- a/build/download_gold_plugin.py
+++ b/build/download_gold_plugin.py
@@ -34,13 +34,8 @@ def main():
 
   os.chdir(LLVM_BUILD_PATH)
 
-  # TODO(pcc): Fix gsutil.py cp url file < /dev/null 2>&0
-  # (currently aborts with exit code 1,
-  # https://github.com/GoogleCloudPlatform/gsutil/issues/289) or change the
-  # stdin->stderr redirect in update.py to do something else (crbug.com/494442).
   subprocess.check_call(['python', GSUTIL_PATH,
-                         'cp', remote_path, targz_name],
-                        stderr=open('/dev/null', 'w'))
+                         'cp', remote_path, targz_name])
   subprocess.check_call(['tar', 'xzf', targz_name])
   os.remove(targz_name)
   return 0