The 'apmtest' folder contains code that is not part of any build graph
and has not been updated since 2017 since the code migrated locations.
At a glance, it does not seem to be testing anything specific to the
audio-processing module either.
This implicitly resolves the usage of the deprecated ALooper_pollAll API
by removing the code entirely.
Bug: webrtc:42225691
Change-Id: I79e14140ee40c567e1d07431f874d5f48e39d384
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/350270
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42299}