Revert "Include read_global_vars.yml in pre-run: zuul.d/pods.yaml"

[amartyasinha]

Reverts #3277

The reason to remove the playbook from pre-run stage from Zuul is, Zuul is not storing the cached vars that we added in pre-run. Maybe it is possible by some other way, but lets remove this for now.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://softwarefactory-project.io/zuul/t/rdoproject.org/buildset/5c8f1d8aea9146f0a796c5d63f9ae7d0

✔️ openstack-k8s-operators-content-provider SUCCESS in 1h 56m 15s
✔️ podified-multinode-edpm-deployment-crc SUCCESS in 1h 19m 37s
✔️ cifmw-crc-podified-edpm-baremetal SUCCESS in 1h 21m 33s
❌ cifmw-pod-zuul-files FAILURE in 5m 16s
✔️ noop SUCCESS in 0s
✔️ cifmw-pod-ansible-test SUCCESS in 9m 03s
✔️ cifmw-pod-k8s-snippets-source SUCCESS in 4m 44s
✔️ cifmw-pod-pre-commit SUCCESS in 11m 07s
✔️ build-push-container-cifmw-client SUCCESS in 24m 26s