roll: third_party/pigweed *: Fix ruff-detected Python lint errors

In particular, this removes unused imports and replaces
"not <x> in <y>" with "<x> not in <y>".

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/241272
Original-Revision: ea85dfddb6724d0bc26f1d7f0feaf6705692eaad

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 9aae89c7bab1de..ea85dfddb6724d
Roller-URL: https://ci.chromium.org/b/8734506097570208529
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I14e4880fd193894080e538a47a4745da1b85a31e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/241373
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
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 9aae89c..ea85dfd 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 9aae89c7bab1de5a914c462f814fec6528e27a0f
+Subproject commit ea85dfddb6724d0bc26f1d7f0feaf6705692eaad