chore(aiplatform): remove unused apiextensionsv1 package

[neumann-coder-bot]

Description

This PR removes pkg/controller/direct/aiplatform/apiextensionsv1/apiextensionsv1.go as it is unused.

Fixes #13679

NONE

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This PR was generated by the overseer agent (powered by the gemini-3.7-flash model).

[google-oss-prow]

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[argus-watcher-bot]

🤖 AI Factory started investigating CI check failures for this pull request.

Note: We recommend waiting for the 'ready-for-human' label before leaving review comments. Comments added while the system is actively working may be associated with outdated commits once a new commit is pushed, causing them to be ignored.

[neumann-coder-bot]

Investigating tests-e2e-fixtures-container-2-of-2 failure

Run: 37080391683
Name: tests-e2e-fixtures-container-2-of-2
Cause: Test Failure
Details: The job failed in TestAllInSeries/fixtures/pkg/test/resourcefixture/testdata/basic/container/v1beta1/containercluster/containercluster-autopilot-privilegedadmission due to a diff against _http_mock.log (podIpv4CidrBlock and podRange fields). This test fixture was merged into master recently in PR #12771 and is also failing on master. The changes in this PR (chore(aiplatform): remove unused apiextensionsv1 package) do not affect container resources.
Action Taken: Rerun triggered

(This report was generated by overseer)

[argus-watcher-bot]

🤖 AI Factory started investigating CI check failures for this pull request.

Note: We recommend waiting for the 'ready-for-human' label before leaving review comments. Comments added while the system is actively working may be associated with outdated commits once a new commit is pushed, causing them to be ignored.

[neumann-coder-bot]

Investigating tests-e2e-fixtures-container-2-of-2 failure

Run: 37080391683
Name: tests-e2e-fixtures-container-2-of-2
Cause: Test Failure
Details: The job failed in TestAllInSeries/fixtures/pkg/test/resourcefixture/testdata/basic/container/v1beta1/containercluster/containercluster-autopilot-privilegedadmission due to a mismatch against _http_mock.log. This failure is unrelated to this PR's cleanup of unused files in aiplatform.
Action Taken: Rerun triggered

Investigating presubmit-gatekeeper failure

Run: 37080391683
Name: presubmit-gatekeeper
Cause: Test Failure
Details: Failed as a downstream result of tests-e2e-fixtures-container-2-of-2 failing.
Action Taken: Rerun triggered

(This report was generated by overseer)