Deprecate message queue type (#10040)

Not removing all the code for now, maybe we should 🤔

packages/twenty-website/src/content/developers/backend-development/queue.mdx

@@ -7,9 +7,7 @@ image: /images/user-guide/emails/emails_header.png
 Queues facilitate async operations to be performed. They can be used for performing background tasks such as sending a welcome email on register.
 Each use case will have its own queue class extended from `MessageQueueServiceBase`.
 
-Currently, queue supports two drivers which can be configured by env variable `MESSAGE_QUEUE_TYPE`.
-1. `bull-mq`: this is the default driver, which uses [bull-mq](https://bullmq.io/) under the hood.
-2. `pg-boss`: this uses [pg-boss](https://github.com/timgit/pg-boss) under the hood.
+Currently, we only support `bull-mq`[bull-mq](https://bullmq.io/) as the queue driver.
 
 ## Steps to create and use a new queue
 

packages/twenty-website/src/content/developers/self-hosting/setup.mdx

@@ -158,7 +158,6 @@ yarn command:prod cron:calendar:ongoing-stale
     ['FRONT_PROTOCOL', 'http', 'protocol of the frontend server. Could be `http` or `https`'],
     ['FRONT_PORT', '3001', 'Port of the frontend server.'],
     ['PORT', '3000', 'Port of the backend server'],
-    ['CACHE_STORAGE_TYPE', 'redis', 'Cache type (memory, redis...)'],
     ['CACHE_STORAGE_TTL', '3600 * 24 * 7', 'Cache TTL in seconds']
     ]}></ArticleTable>
 
@@ -276,12 +275,6 @@ yarn command:prod cron:calendar:ongoing-stale
   ['SERVERLESS_LAMBDA_SECRET_ACCESS_KEY', '', 'Optional depending on the authentication method'],
 ]}></ArticleTable>
 
-### Message Queue
-
-<ArticleTable options={[
-    ['MESSAGE_QUEUE_TYPE', 'bull-mq', "Queue driver: 'bull-mq'"],
-    ]}></ArticleTable>
-
 ### Logging
 
 <ArticleTable options={[