Replace leftover usage of old AEC interfaces
Replace leftover usage of old AEC interfaces

This CL cleans up some code missed by this other CL:
https://webrtc-review.googlesource.com/c/src/+/101622

Bug: webrtc:9535
Change-Id: Ic4dac670914c92d69a10d38140fd853edb50450d
Reviewed-on: https://webrtc-review.googlesource.com/c/103400
Reviewed-by: Fredrik Solenberg <a86c06127c44de4932e34935a0755af178aabab6@webrtc.org>
Commit-Queue: Sam Zackrisson <b1a93beadfe1d2f7f0106ee02b6ffcdc950aa103@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#24951}
ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc