[roll third_party/pigweed] pw_transfer: Remove unused import

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/95840

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 4a00dd220b61222..8a4b9201a856a8b
Roller-URL: https://ci.chromium.org/b/8813258456667515441
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8813258456667515441
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I49e94b828ad23189d2452ae101695b2c8fa628c1
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/95834
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
1 file changed