[roll third_party/pigweed] pw_containers: Disallow deletion from InlineVarLenEntryQueue base

Also remove unnecessary macro.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/210639
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 9452c6061de3f1a..508e145f7f9814f
Roller-URL: https://ci.chromium.org/b/8745933017646774657
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I297115378bf4c24491bd78fc1da2ce4490585810
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/214194
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/third_party/pigweed b/third_party/pigweed
index 9452c60..508e145 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 9452c6061de3f1a721e9e12478249fa2d73ddd6b
+Subproject commit 508e145f7f9814f7c5a46e7d9abb34154eb05b7c