chore(eks-v2): remove awsAuth

[xazhao]

Reason for this change

For eks-v2 module, it uses API as authentication mode which means access entries will be used to replace aws-auth ConfigMap. awsAuth construct is not used anymore.

Description of changes

• authenticationMode is removed from L2 because the only authentication mode allowed is API. The value is hardcode when creating the L1 resource.
• Remove awsAuth and its usage in the new module

Description of how you validated changes

unit tests

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.46%. Comparing base (5410e10) to head (bca7e1b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #32961   +/-   ##
=======================================
  Coverage   81.46%   81.46%           
=======================================
  Files         224      224           
  Lines       13748    13748           
  Branches     2412     2412           
=======================================
  Hits        11200    11200           
  Misses       2273     2273           
  Partials      275      275           

Flag	Coverage Δ
suite.unit	81.46% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	80.85% <ø> (ø)
packages/aws-cdk-lib/core	82.10% <ø> (ø)

[gracelu0]

LGTM

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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: bca7e1b
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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