removed 1.31 support for 2.13 for eks

[swastik959]

Summary

Fixes #15630
rancher/rancher#51253

Occurred changes and/or fixed issues

removed 1.31 support for 2.13 for eks

Technical notes summary

Areas or cases that should be tested

Areas which could experience regressions

Screenshot/Video

Checklist

• The PR is linked to an issue and the linked issue has a Milestone, or no issue is needed
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• The PR has been self reviewed
• The PR has a reviewer assigned
• The PR has automated tests or clear instructions for manual tests and the linked issue has appropriate QA labels, or tests are not needed
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[nwmac]

@swastik959 Can you create an issue in this repo and update the fixes comment in this PR to reference that issue. Thanks.

[swastik959]

@nwmac done