roll: third_party/pigweed pw_bluetooth_sapphire: Remove uncalled function cached_scan_results

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/340433
Copybara-Verified: Copybara Prod <copybara-worker-blackhole@google.com>
Original-Revision: 51107a564af5bfd3247c86f327fc9271b243f93f

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: c3435af9777324..51107a564af5bf
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8699175633252941825
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ide2e752fbbaf7a1a51420116dc7f83235597452c
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/340637
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.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 c3435af..51107a5 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c3435af9777324f7246bbdaa87277b957cdac60d
+Subproject commit 51107a564af5bfd3247c86f327fc9271b243f93f