♻️(documentation) remove unused environment variables

Yesterday during a deployment, we discovered that these variables are
unused:
POSTGRES_DB
POSTGRES_USER
POSTGRES_PASSWORD

docs/examples/meet.values.yaml

@@ -35,9 +35,6 @@ backend:
     DB_USER: dinum
     DB_PASSWORD: pass
     DB_PORT: 5432
-    POSTGRES_DB: meet
-    POSTGRES_USER: dinum
-    POSTGRES_PASSWORD: pass
     REDIS_URL: redis://default:pass@redis-master:6379/1
     STORAGES_STATICFILES_BACKEND: django.contrib.staticfiles.storage.StaticFilesStorage
     LIVEKIT_API_SECRET: secret

docs/installation.md

@@ -217,9 +217,6 @@ DB_NAME: meet
 DB_USER: dinum
 DB_PASSWORD: pass
 DB_PORT: 5432
-POSTGRES_DB: meet
-POSTGRES_USER: dinum
-POSTGRES_PASSWORD: pass
 ```
 
 ## Deployment

src/helm/env.d/dev-dinum/values.meet.yaml.gotmpl

@@ -40,9 +40,6 @@ backend:
     DB_USER: dinum
     DB_PASSWORD: pass
     DB_PORT: 5432
-    POSTGRES_DB: meet
-    POSTGRES_USER: dinum
-    POSTGRES_PASSWORD: pass
     REDIS_URL: redis://default:pass@redis-master:6379/1
     STORAGES_STATICFILES_BACKEND: django.contrib.staticfiles.storage.StaticFilesStorage
     {{- with .Values.livekit.keys }}

src/helm/env.d/dev-keycloak/values.meet.yaml.gotmpl

@@ -40,9 +40,6 @@ backend:
     DB_USER: dinum
     DB_PASSWORD: pass
     DB_PORT: 5432
-    POSTGRES_DB: meet
-    POSTGRES_USER: dinum
-    POSTGRES_PASSWORD: pass
     REDIS_URL: redis://default:pass@redis-master:6379/1
     STORAGES_STATICFILES_BACKEND: django.contrib.staticfiles.storage.StaticFilesStorage
     {{- with .Values.livekit.keys }}

src/helm/env.d/dev/values.meet.yaml.gotmpl

@@ -62,9 +62,6 @@ backend:
     DB_USER: dinum
     DB_PASSWORD: pass
     DB_PORT: 5432
-    POSTGRES_DB: meet
-    POSTGRES_USER: dinum
-    POSTGRES_PASSWORD: pass
     REDIS_URL: redis://default:pass@redis-master:6379/1
     STORAGES_STATICFILES_BACKEND: django.contrib.staticfiles.storage.StaticFilesStorage
     {{- with .Values.livekit.keys }}