[roll third_party/pigweed] pw_env_setup: Remove "untested" warning

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/182813

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: f0c03bbd9de36f5..60c1173f7440dff
Roller-URL: https://ci.chromium.org/b/8761706345270220705
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I850a33438213cf98498597a7de13dc77b6616012
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/185029
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index f0c03bb..60c1173 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit f0c03bbd9de36f56c7eb68ba251674c1d3386682
+Subproject commit 60c1173f7440dff6680c792ca1596d3997906c55