removing the last vestiges of the p2p/ dependencies and stop depending on them for the "webrtc" static library. BUG=webrtc:42226155 Change-Id: I0b6ac36c0a22054c229a94f55fa6690580b9d47f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/371342 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Philipp Hancke <phancke@meta.com> Cr-Commit-Position: refs/heads/main@{#43581}