Update audio_coding tests to not use CodecInst. Bug: webrtc:7626 Change-Id: I880fb8d72d7d0a915d274e67feb6106f023697c2 Reviewed-on: https://webrtc-review.googlesource.com/c/112594 Commit-Queue: Fredrik Solenberg <solenberg@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25879}