remove s165 terraform

[aje54]

Context

to remove unused S165 terraform code

Changes proposed in this pull request

from /terraform dir remove everything except /../application and /../domains

Guidance to review

Check there are no S165 terraform references

Link to Trello card

Checklist

• Attach to Trello card
• Rebased main
• Cleaned commit history
• Tested by running locally

[saliceti]

Can we update more things:

• delete the legacy commands from the Makefile
• update Readme: Accessing the Rails console through the Azure CLI and Updating keyvault secrets are not relevant anymore
• update or delete PIM doc: https://github.com/DFE-Digital/refer-serious-misconduct/blob/main/docs/privileged-identity-management-requests.md We have the right one here: https://github.com/DFE-Digital/teacher-services-cloud/blob/main/documentation/developer-onboarding.md#how-to-request-pim
• this script looks unused: https://github.com/DFE-Digital/refer-serious-misconduct/blob/main/bin/start-review-app.sh

[saliceti]

Everything until line 178 can go I think