simplify readme

Author: els-tmiller

README.md

@@ -187,15 +187,7 @@ export IMMUDB_S3_ENDPOINT="https://${IMMUDB_S3_BUCKET_NAME}.s3.${IMMUDB_S3_LOCAT
 If using Fargate, the credentials URL can be sourced automatically:
 
 ```bash
-export IMMUDB_S3_STORAGE=true
-export IMMUDB_S3_ROLE_ENABLED=true
 export IMMUDB_S3_USE_FARGATE_CREDENTIALS=true
-export IMMUDB_S3_BUCKET_NAME=<BUCKET NAME>
-export IMMUDB_S3_LOCATION=<AWS S3 REGION>
-export IMMUDB_S3_PATH_PREFIX=testing-001
-export IMMUDB_S3_ENDPOINT="https://${IMMUDB_S3_BUCKET_NAME}.s3.${IMMUDB_S3_LOCATION}.amazonaws.com"
-
-./immudb
 ```
 
 Optionally, you can specify the exact role immudb should be using with: