remove wait_flight2 state

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 2bca21a..043988f 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -692,7 +692,6 @@
     MBEDTLS_SSL_HELLO_RETRY_REQUEST,
     MBEDTLS_SSL_ENCRYPTED_EXTENSIONS,
     MBEDTLS_SSL_END_OF_EARLY_DATA,
-    MBEDTLS_SSL_WAIT_FLIGHT2,
     MBEDTLS_SSL_CLIENT_CERTIFICATE_VERIFY,
     MBEDTLS_SSL_CLIENT_CCS_AFTER_SERVER_FINISHED,
     MBEDTLS_SSL_CLIENT_CCS_BEFORE_2ND_CLIENT_HELLO,
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index db6140e..c7dbb53 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -2815,37 +2815,6 @@
     return 0;
 }
 
-/*
- * Handler for MBEDTLS_SSL_WAIT_FLIGHT2
- *
- * RFC 8446 section A.2
- *
- *                      WAIT_FLIGHT2
- *                            |
- *                   +--------+--------+
- *           No auth |                 | Client auth
- *                   |                 |
- *                   |                 v
- *                   |             WAIT_CERT
- *                   |        Recv |       | Recv Certificate
- */
-MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_process_wait_flight2(mbedtls_ssl_context *ssl)
-{
-    MBEDTLS_SSL_DEBUG_MSG(2, ("=> ssl_tls13_process_wait_flight2"));
-
-    if (ssl->handshake->certificate_request_sent) {
-        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_CERTIFICATE);
-    } else {
-        MBEDTLS_SSL_DEBUG_MSG(2, ("skip parse certificate"));
-        MBEDTLS_SSL_DEBUG_MSG(2, ("skip parse certificate verify"));
-        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_FINISHED);
-    }
-
-    MBEDTLS_SSL_DEBUG_MSG(2, ("<= ssl_tls13_process_wait_flight2"));
-    return 0;
-}
-
 #if defined(MBEDTLS_SSL_EARLY_DATA)
 /*
  * Handler for MBEDTLS_SSL_END_OF_EARLY_DATA( WAIT_EOED )
@@ -3378,10 +3347,6 @@
             ret = ssl_tls13_write_server_finished(ssl);
             break;
 
-        case MBEDTLS_SSL_WAIT_FLIGHT2:
-            ret = ssl_tls13_process_wait_flight2(ssl);
-            break;
-
 #if defined(MBEDTLS_SSL_EARLY_DATA)
         case MBEDTLS_SSL_END_OF_EARLY_DATA:
             ret = ssl_tls13_process_wait_eoed(ssl);