updates

Author: hrasheed-msft

articles/hdinsight/kafka/apache-kafka-ssl-encryption-authentication.md

@@ -81,7 +81,6 @@ Use the following detailed instructions to complete the broker setup:
 1. Change to the CA machine and sign all of the received cert signing requests:
 
     ```bash
-    openssl req -new -newkey rsa:4096 -days 365 -x509 -subj "/CN=Kafka-Security-CA" -keyout ca-key -out ca-cert -nodes
     openssl x509 -req -CA ca-cert -CAkey ca-key -in wn0-cert-sign-request -out wn0-cert-signed -days 365 -CAcreateserial -passin pass:"MyServerPassword123"
     openssl x509 -req -CA ca-cert -CAkey ca-key -in wn1-cert-sign-request -out wn1-cert-signed -days 365 -CAcreateserial -passin pass:"MyServerPassword123"
     openssl x509 -req -CA ca-cert -CAkey ca-key -in wn2-cert-sign-request -out wn2-cert-signed -days 365 -CAcreateserial -passin pass:"MyServerPassword123"