Cleanup permissions for Pod resources that are no longer needed

[everettraven]

          Out of scope for this PR, but seeing this I don't think we need these permissions on pods anymore. we don't use a pod to unpack the catalog contents anymore and probably forgot to come back and cleanup these permissions. I'll create an issue for this.

Originally posted by @everettraven in operator-framework/catalogd#263 (comment)

[github-actions]

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