remove: unnecessary code

.env.example

@@ -1,17 +0,0 @@
-# Database connection string
-DATABASE_URI=file:./your-database-name.db
-
-# Or use a PG connection string
-#DATABASE_URI=postgresql://127.0.0.1:5432/your-database-name
-
-# Used to encrypt JWT tokens
-PAYLOAD_SECRET=YOUR_SECRET_HERE
-
-# Used to configure CORS, format links and more. No trailing slash
-NEXT_PUBLIC_SERVER_URL=http://localhost:3000
-
-# Secret used to authenticate cron jobs
-CRON_SECRET=YOUR_CRON_SECRET_HERE
-
-# Used to validate preview requests
-PREVIEW_SECRET=YOUR_SECRET_HERE