Remove attribution jobs for release-0.18 branch

[abhay-krishna]

Removing the attribution jobs for release-0.18 branch.

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[eks-distro-bot]

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[eks-distro-bot]

@abhay-krishna: Updated the job-config configmap in namespace default at cluster default using the following files:

• key eks-anywhere-attribution-periodics-release-0.18.yaml using file ``

In response to this:

Removing the attribution jobs for release-0.18 branch.

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