🐛 Drop MachinePools from Dualstack tests

[killianmuldoon]

Fixes a failure in the dualstack e2e tests caused by the introduction of MachinePools in #9393

This PR drops the MachinePools in the templates. I'll add info on the umbrella issue for how to make the dualstack e2e tests work with MachinePools.

Related to #5991

[killianmuldoon]

/area e2e-testing
/test pull-cluster-api-e2e-full-dualstack-and-ipv6-main

[sbueringer]

Thank you!

/lgtm
/approve

(tide will wait for e2e-full-dualstack for merge anyway)

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 05b8a6f31037fe537ac4e205c5c877ff8dcada34

[k8s-ci-robot]

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[sbueringer]

Should be unrelated: https://prow.k8s.io/view/gs/kubernetes-jenkins/pr-logs/pull/kubernetes-sigs_cluster-api/9477/pull-cluster-api-e2e-full-dualstack-and-ipv6-main/1704797689650089984

/retest

[chrischdi]

/lgtm

[willie-yao]

I'll add info on the umbrella issue for how to make the dualstack e2e tests work with MachinePools.

@killianmuldoon Can you add info to the new umbrella issue for MachinePools in ClusterClass? I'm looking to re-implement this soon. #10028

[killianmuldoon]

I think the only information I have is that MachinePools should be added back into the dualstack tests - no other specific implementation details that I'm aware of.