[roll third_party/pigweed] pw_rpc: Remove unused std::byte statement

Newer clang-tidy versions complained about this unused "using"
statement.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/95660

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 0a22a093058a144..714c790bde63cb2
Roller-URL: https://ci.chromium.org/b/8813356606530760929
Cq-Cl-Tag: roller-builder:pigweed-experimental-roller
Cq-Cl-Tag: roller-bid:8813356606530760929
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I83d5954cf1efeda5f3cae55ce65882810dde1b6e
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/95643
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
1 file changed