Remove AWS S3 from the service (#8594)

## Trello card URL

Follow up on:
https://trello.com/c/UtzBnbCV/2097-move-from-aws-s3-to-azure-storage

## Changes in this PR:

- Remove S3 & Mirror Active Storage Services.
- Remove already run rake tasks from migration to Azure.

## Checklists:

### Data & Schema Changes

If this PR modifies data structures or validations, check the following:

- [ ] Adds/removes model validations
- [ ] Adds/removes database fields
- [ ] Modifies Vacancy enumerables (phases, working patterns, job roles,
key stages, etc.)

<details>
<summary>If any of the above options has changed then the author must
check/resolve all of the following...</summary>

### Integration Impact

Does this change affect any of these integrations?
- [ ] DfE Analytics platform
- [ ] Legacy imports mappings
- [ ] DWP Find a Job export mappings
- [ ] Publisher ATS API (may require mapping updates or API versioning)

### User Experience & Data Integrity

Could this change impact:
- [ ] Existing subscription alerts (will legacy subscription search
filters break?)
- [ ] Legacy vacancy copying (will copied vacancies fail new
validations?)
- [ ] In-progress drafts for Vacancies or Job Applications
</details>

Author: scruti

.env.development

@@ -1,11 +1,9 @@
 ATS_API_CLIENT_TESTING_API_KEY=a94272cb45956f2116f3026847ebb640dc60a2fe
 DFE_SIGN_IN_REDIRECT_URL=http://localhost:3000/auth/dfe/callback
 DISABLE_EMAILS=false
-DOCUMENTS_S3_BUCKET=test_bucket
 DOMAIN=localhost:3000
 LOCKBOX_MASTER_KEY=0000000000000000000000000000000000000000000000000000000000000000
 RAILS_DEVELOPMENT_HOSTS=.app.github.dev
-SCHOOLS_IMAGES_LOGOS_S3_BUCKET=test_bucket
 SECRET_KEY_BASE=352f2c2ccf5a9a77d8cc91fade3685dda45407f329c14ed0b8e4c2d6618d8475e4e4416bf20eeeec46558384ea9c9e2de97b85e20c47adb93d914576ed6b69d4
 SENTRY_DSN=
 SENTRY_FRONTEND_DSN=

.env.test

@@ -19,8 +19,6 @@ BIGQUERY_TABLE_NAME=test_events
 BIGQUERY_PROJECT_ID=teacher-vacancy-service
 BIGQUERY_DATASET=testing_dataset
 BIG_QUERY_API_JSON_KEY={}
-DOCUMENTS_S3_BUCKET=test_bucket
-SCHOOLS_IMAGES_LOGOS_S3_BUCKET=test_bucket
 SECRET_KEY_BASE=a5cf81cfe4f58f3b177301038681edc63bb0ae35912ed7e6d35ba911275e53efdf05fb05d5c87095519bb09021c39e3b561bd242fe7d6a75982d8f0150cdca60
 PARALLEL_TEST_FIRST_IS_1=true
 SKYLIGHT_ENABLED=false

Dockerfile

@@ -34,9 +34,6 @@ COPY . .
 # configuring it using the ENV variables we provide in storage.yml. However, at this point, these ENV vars have not been loaded,
 # causing the error. Below we define two throaway ENV vars to prevent the error from being thrown. These are then later overwritten,
 # when all of the ENV vars are loaded.
-
-ENV DOCUMENTS_S3_BUCKET=throwaway_value
-ENV SCHOOLS_IMAGES_LOGOS_S3_BUCKET=throwaway_value
 ENV DOCUMENTS_AZURE_STORAGE_ACCESS_KEY=throwaway_value
 ENV IMAGES_LOGOS_AZURE_STORAGE_ACCESS_KEY=throwaway_value
 

app/jobs/active_storage/mirror_job.rb

@@ -1,11 +1,3 @@
-amazon_s3_documents:
-  service: Disk
-  root: <%= Rails.root.join("storage") %>
-
-amazon_s3_images_and_logos:
-  service: Disk
-  root: <%= Rails.root.join("storage") %>
-
 azure_storage_documents:
   service: Disk
   root: <%= Rails.root.join("tmp/storage") %>
@@ -14,14 +6,6 @@ azure_storage_images_and_logos:
   service: Disk
   root: <%= Rails.root.join("tmp/storage") %>
 
-mirror_documents:
-  service: Disk
-  root: <%= Rails.root.join("tmp/storage") %>
-
-mirror_images_and_logos:
-  service: Disk
-  root: <%= Rails.root.join("tmp/storage") %>
-
 local:
   service: Disk
   root: <%= Rails.root.join("storage") %>

config/storage/development.yml

@@ -1,17 +1,3 @@
-amazon_s3_documents:
-  service: S3
-  access_key_id: <%= ENV["DOCUMENTS_ACCESS_KEY_ID"] %>
-  secret_access_key: <%= ENV["DOCUMENTS_ACCESS_KEY_SECRET"] %>
-  bucket: <%= ENV["DOCUMENTS_S3_BUCKET"] %>
-  region: eu-west-2
-
-amazon_s3_images_and_logos:
-  service: S3
-  access_key_id: <%= ENV["SCHOOLS_IMAGES_LOGOS_ACCESS_KEY_ID"] %>
-  secret_access_key: <%= ENV["SCHOOLS_IMAGES_LOGOS_ACCESS_KEY_SECRET"] %>
-  bucket: <%= ENV["SCHOOLS_IMAGES_LOGOS_S3_BUCKET"] %>
-  region: eu-west-2
-
 azure_storage_documents:
   service: AzureBlob
   storage_account_name: <%= ENV["DOCUMENTS_AZURE_STORAGE_ACCOUNT_NAME"] %>
@@ -23,15 +9,3 @@ azure_storage_images_and_logos:
   storage_account_name: <%= ENV["IMAGES_LOGOS_AZURE_STORAGE_ACCOUNT_NAME"] %>
   storage_access_key: <%= ENV["IMAGES_LOGOS_AZURE_STORAGE_ACCESS_KEY"] %>
   container: images-logos
-
-mirror_documents:
-  service: Mirror
-  primary: amazon_s3_documents
-  mirrors:
-    - azure_storage_documents
-
-mirror_images_and_logos:
-  service: Mirror
-  primary: amazon_s3_images_and_logos
-  mirrors:
-    - azure_storage_images_and_logos

config/storage/production.yml

@@ -1,11 +1,3 @@
-amazon_s3_documents:
-  service: Disk
-  root: <%= Rails.root.join("tmp/storage") %>
-
-amazon_s3_images_and_logos:
-  service: Disk
-  root: <%= Rails.root.join("tmp/storage") %>
-
 azure_storage_documents:
   service: Disk
   root: <%= Rails.root.join("tmp/storage") %>
@@ -14,15 +6,6 @@ azure_storage_images_and_logos:
   service: Disk
   root: <%= Rails.root.join("tmp/storage") %>
 
-mirror_documents:
-  service: Disk
-  root: <%= Rails.root.join("tmp/storage") %>
-
-mirror_images_and_logos:
-  service: Disk
-  root: <%= Rails.root.join("tmp/storage") %>
-
 test:
   service: Disk
   root: <%= Rails.root.join("tmp/storage") %>
-