Remove test jobs for alpha.kubernetes.io/nvidia-gpu.

[rohitagarwal003]

Support for it was removed in kubernetes/kubernetes#61498

[BenTheElder]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BenTheElder, mindprince

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [BenTheElder]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[rohitagarwal003]

Currently this job runs for 1.9, 1.10 and master.

This PR removes support for master.

When beta and stable1 pointers update, we should remove the old versions of this job instead of pointing it to 1.11.

[BenTheElder]

When beta and stable1 pointers update, we should remove the old versions of this job instead of pointing it to 1.11.

cc @krzyzacy

[k8s-ci-robot]

@mindprince: Updated the config configmap

In response to this:

Support for it was removed in kubernetes/kubernetes#61498

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[rohitagarwal003]

When beta and stable1 pointers update, we should remove the old versions of this job instead of pointing it to 1.11.

Note that this is only true for ci-kubernetes-e2e-gce-gpu* jobs and not for ci-kubernetes-e2e-gce-device-plugin-gpu* jobs.