Revert "nn: use cryptohome daemon storage location for cache files"

This reverts commit a69a9e160ff4db6cd8971d30d023aae1379a5c9a.

Reason for revert: Has broken relesae builds: https://logs.chromium.org/logs/chromeos/buildbucket/cr-buildbucket.appspot.com/8848535058247719152/+/steps/BuildPackages/0/stdout

Original change's description:
> nn: use cryptohome daemon storage location for cache files
>
> This CL forces any request that sets up compilation caching to store
> the files in the cryptohome daemon storage location of the ml_service
> process. This is done due to the docs indicating that cache files should
> be stored in a secure location. See:
> https://source.android.com/devices/neural-networks/compilation-caching#security
>
> We can't do this in configuration since the daemon storage is per-user
> and the username hash needs to be queried at runtime.
>
> BUG=b:178762478
> TEST=FEATURES=test emerge-volteer aosp-frameworks-ml-nn
>
> Change-Id: I09d5d4be01a3435cedda4e822a4f423f8723e5ce
> Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/frameworks/ml/+/2817759
> Tested-by: Jim Pollock <jmpollock@chromium.org>
> Auto-Submit: Jim Pollock <jmpollock@chromium.org>
> Commit-Queue: Jim Pollock <jmpollock@chromium.org>
> Reviewed-by: Stuart Langley <slangley@chromium.org>
> Reviewed-by: Michael Pishchagin <mblsha@google.com>

Bug: b:178762478
Change-Id: Iac9913c54332c5fb5f1205d7b6ed9c58825b866c
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/frameworks/ml/+/2859271
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: David Riley <davidriley@chromium.org>
Commit-Queue: Jim Pollock <jmpollock@chromium.org>
Auto-Submit: Jim Pollock <jmpollock@chromium.org>
8 files changed