[roll third_party/pigweed] pw_bluetooth: Delete temporary Emboss build library

Part of process to migrate Emboss vendor commands into new namespace (pw::bluetooth::vendor::android_hci)

Original-Bug: b/280839425
Test: pw presubmit --step gn_emboss_nanopb_build
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/153195

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: c07555a4638bb58..1f8a9744920941f
Roller-URL: https://ci.chromium.org/b/8777182911129850977
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ie2a738af2ac63230ade1008ae9b1644871b39228
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/153243
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index c07555a..1f8a974 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c07555a4638bb58c8b41fed14f65a8907d6041ad
+Subproject commit 1f8a9744920941fedfd732b9c28361287f690947