Remove PostgREST (#41299)

This PR removes the PostgREST containers and deployments, as we're no
longer using it.

Release Notes:

- N/A

compose.yml

@@ -33,32 +33,6 @@ services:
     volumes:
       - ./livekit.yaml:/livekit.yaml
 
-  postgrest_app:
-    image: docker.io/postgrest/postgrest
-    container_name: postgrest_app
-    ports:
-      - 8081:8081
-    environment:
-      PGRST_DB_URI: postgres://postgres@postgres:5432/zed
-    volumes:
-      - ./crates/collab/postgrest_app.conf:/etc/postgrest.conf
-    command: postgrest /etc/postgrest.conf
-    depends_on:
-      - postgres
-
-  postgrest_llm:
-    image: docker.io/postgrest/postgrest
-    container_name: postgrest_llm
-    ports:
-      - 8082:8082
-    environment:
-      PGRST_DB_URI: postgres://postgres@postgres:5432/zed_llm
-    volumes:
-      - ./crates/collab/postgrest_llm.conf:/etc/postgrest.conf
-    command: postgrest /etc/postgrest.conf
-    depends_on:
-      - postgres
-
   stripe-mock:
     image: docker.io/stripe/stripe-mock:v0.178.0
     ports: