roll: pigweed pw_env_setup: Remove black.json

This file isn't used by upstream and probably isn't used downstream
either.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/241359
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: a789e9c308f3b289c950e8afb3d891fa5b7b39ac

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 90241308d79f89..a789e9c308f3b2
Roller-URL: https://ci.chromium.org/b/8734431037107281313
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ia485f5d84f1b36fc34836ec7458f490e1466559e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/showcase/sense/+/241362
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/MODULE.bazel b/MODULE.bazel
index 25ea9ca..fdafea6 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -49,8 +49,8 @@
     module_name = "pigweed",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-10-10.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8734436758065693345.
-    commit = "90241308d79f89cd540b5687d3f7d44d5395ba7a",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8734431037107281313.
+    commit = "a789e9c308f3b289c950e8afb3d891fa5b7b39ac",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
 )
 
@@ -58,8 +58,8 @@
     module_name = "pw_toolchain",
     # ROLL: Warning: this entry is automatically updated.
     # ROLL: Last updated 2024-10-10.
-    # ROLL: By https://cr-buildbucket.appspot.com/build/8734436758065693345.
-    commit = "90241308d79f89cd540b5687d3f7d44d5395ba7a",
+    # ROLL: By https://cr-buildbucket.appspot.com/build/8734431037107281313.
+    commit = "a789e9c308f3b289c950e8afb3d891fa5b7b39ac",
     remote = "https://pigweed.googlesource.com/pigweed/pigweed",
     strip_prefix = "pw_toolchain_bazel",
 )