roll: third_party/pigweed pw_minimal_cpp_stdlib: Remove module

This module was intended to be a temporary workaround for a specific
customer that did not have a standard C++ library. It has always been
incomplete and incorrect in places, and inappropriate for general
usage.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/324012
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: 75ab64cf5678053c308253710a590c018db33884

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 29628d51530627..75ab64cf567805
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8703253216611635409
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I4cfeb5867314845f45535d0dd52380441ea0f00f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/324114
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 29628d5..75ab64c 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 29628d5153062726581531dddf1daf3c07a4c43f
+Subproject commit 75ab64cf5678053c308253710a590c018db33884