Remove all perf checks in preparation for beta-2 update

[hongsuh-aws]

Removing all perf checks due to upcoming beta-2 release, which will involve an overhaul of this repo.

Testing:

Please see detailed unit test requirements in the CONTRIBUTING.md

• The change is covered by numeric check using nki.baremetal
• The change is covered by performance benchmark test using nki.benchmark
• The change is covered by end-to-end integration test

Pull Request Checklist

• I have filled in all the required field in the template
• I have tested locally that all the tests pass
• By submitting this pull request, I confirm that my contribution is made under the terms of the MIT-0 license.

[github-actions]

Please download and review the generated API doc at https://github.com/aws-neuron/nki-samples/actions/runs/19976988981

[tonyz0x0]

LGTM