Default to parallel=False, since parallel=True uses way more memory.

BUG=chromium:361740
TEST=Remote trybot run of x86-mario-paladin

Change-Id: I35436458564ac856ff1d803705aeb139b48a64c7
Reviewed-on: https://chromium-review.googlesource.com/194861
Reviewed-by: David James <davidjames@chromium.org>
Tested-by: David James <davidjames@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>
diff --git a/scripts/gs_fetch_binpkg.py b/scripts/gs_fetch_binpkg.py
index 998c737..372ce37 100644
--- a/scripts/gs_fetch_binpkg.py
+++ b/scripts/gs_fetch_binpkg.py
@@ -34,7 +34,7 @@
   temp_path = '%s.tmp' % filename
   osutils.SafeUnlink(temp_path)
   try:
-    ctx.Copy(uri, temp_path, parallel=False, log_output=True)
+    ctx.Copy(uri, temp_path, log_output=True)
     shutil.move(temp_path, filename)
   finally:
     osutils.SafeUnlink(temp_path)