Stop pulling aws-iam-authenticator binary

[ndbaker1]

Issue #, if available:

Description of changes:

we are using aws eks get-token over aws-iam-authenticator since the aws cli version in AL2023 packages supports this feature generally.

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Testing Done

testing nodegroup launch connects to cluster

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[bryantbiggs]

Does the kubelet kubeconfig need to be updated https://github.com/awslabs/amazon-eks-ami/blob/master/files/kubelet-kubeconfig

Or is nodeadm generating a different config with the awscli used instead?

[ndbaker1]

is nodeadm generating a different config with the awscli used instead?

yep, there's an updated kubeconfig generated by nodeadm which doesn't rely on aws-iam-authenticator:
https://github.com/awslabs/amazon-eks-ami/blob/al2023/nodeadm/internal/kubelet/kubeconfig.template.yaml

Does the kubelet kubeconfig need to be updated https://github.com/awslabs/amazon-eks-ami/blob/master/files/kubelet-kubeconfig

this behavior is just for AL2023 using nodeadm, so the one for AL2 will still use the linked file