LAKITU: python3: remove dependency on eselect-python

Backport of crrev/c/3633395. Necessary to update python-exec, which is
necessary as the first step of our ChromeOS rebase.

BUG=b/257271340
TEST=presubmit
RELEASE_NOTE=None

Change-Id: If08fc7025f27e8bb5b0c7a8bca7c07e618cf5c3d
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/39150
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
2 files changed