Revert of WebRtcVoiceMediaChannel::AddRecvStream: Don't call SetRecPayloadType (patchset #13 id:260001 of https://codereview.webrtc.org/2686043006/ )

Reason for revert:
Makes perf and Chromium FYI bots unhappy.

Original issue's description:
> WebRtcVoiceMediaChannel::AddRecvStream: Don't call SetRecPayloadType
>
> This removes one more place where we were unable to handle codecs not
> in the built-in set.
>
> BUG=webrtc:5805
>
> Review-Url: https://codereview.webrtc.org/2686043006
> Cr-Commit-Position: refs/heads/master@{#17370}
> Committed: 1724cfbdba

TBR=ossu@webrtc.org,solenberg@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:5805

Review-Url: https://codereview.webrtc.org/2772043002
Cr-Commit-Position: refs/heads/master@{#17374}

webrtc/modules/rtp_rtcp/BUILD.gn

@@ -168,7 +168,6 @@ rtc_static_library("rtp_rtcp") {
   deps = [
     "../..:webrtc_common",
     "../../api:transport_api",
-    "../../api/audio_codecs:audio_codecs_api",
     "../../base:gtest_prod",
     "../../base:rtc_base_approved",
     "../../base:rtc_task_queue",
@@ -176,7 +175,6 @@ rtc_static_library("rtp_rtcp") {
     "../../common_video",
     "../../logging:rtc_event_log_api",
     "../../system_wrappers",
-    "../audio_coding:audio_format_conversion",
     "../remote_bitrate_estimator",
   ]