Remove all kub3.uk records which are no longer required

[jonathanio]

Remove all the old kub3.uk records which are no longer required by this configuration.

Checklist

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• My pull request follows the guidelines set out in CONTRIBUTING.md.
• I have performed a self-review of my code and run any tests locally to check.
• I have added tests that prove my changes are effective and work correctly.
• I have made corresponding changes to the documentation as needed.
• I have checked my code and corrected any misspellings.
• Each commit in this pull request has a meaningful subject & body for context.
• I have squashed all "fix(up)" commits to provide a clean code history.
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[github-actions]

Terraform Status Report

GitHub Actions has run the [terraform-checks][terraform-checks] Workflow against your pull request, but has failed to run terraform init -backend=false against the configuration Configuration. Expand on the following summary to see the results from this command:

terraform init Log

Error: Unsupported Terraform Core version

  on terraform.tf line 2, in terraform:
   2:   required_version = "~> 1.9.0"

This configuration does not support Terraform version 1.5.7. To proceed,
either choose another supported Terraform version or update this version
constraint. Version constraints are normally set for good reason, so updating
the constraint may lead to other errors or unexpected behavior.