update based on comments

Signed-off-by: Xiaofei Bai <xiaofei.bai@arm.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 91767fb..5e8b60b 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -5579,14 +5579,7 @@
         mbedtls_free( (void*) handshake->sig_algs );
     handshake->sig_algs = NULL;
 #endif /* MBEDTLS_DEPRECATED_REMOVED */
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-    if( ssl->handshake->certificate_request_context )
-    {
-        mbedtls_free( (void*) handshake->certificate_request_context );
-    }
-    handshake->certificate_request_context = NULL;
-    handshake->certificate_request_context_len = 0;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)