Also drop unneeded dependencies and a #pragma.
Bug: webrtc:5876, webrtc:7660
Change-Id: I3a46eaf60591b00e43c0647a6eb758e5443de466
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/128773
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27311}