MINOR: only set sslEngine#setUseClientMode to false once when ssl mod…

…e is server (apache#13626)

The sslEngine.setUseClientMode(false) was duplicated when ssl mode is server during SSLEngine creation
in DefaultSslEngineFactory.java. The patch attemps to remove the duplicated call.

Reviewers:   maulin-vasavada <maulin.vasavada@gmail.com>, Divij Vaidya <diviv@amazon.com>, Manikumar Reddy <manikumar.reddy@gmail.com>

clients/src/main/java/org/apache/kafka/common/security/ssl/DefaultSslEngineFactory.java

@@ -200,7 +200,6 @@ private SSLEngine createSslEngine(Mode mode, String peerHost, int peerPort, Stri
                 case NONE:
                     break;
             }
-            sslEngine.setUseClientMode(false);
         } else {
             sslEngine.setUseClientMode(true);
             SSLParameters sslParams = sslEngine.getSSLParameters();