[roll third_party/pigweed] pw_allocator: Remove conflict marker

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/206590

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 46f6477f64d1411..f3299bee142a088
Roller-URL: https://ci.chromium.org/b/8749663670388623825
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I86f4a1e1701679cd399d52aef3076411e9ce9d02
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/206511
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 46f6477..f3299be 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 46f6477f64d1411f920535f388368c5ca47dd46c
+Subproject commit f3299bee142a088f7c731358af524565a2ff625d