Remove useless early_secrets field

Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 2b1f90f..52dbb3b 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -989,8 +989,6 @@
     mbedtls_ssl_tls13_handshake_secrets tls13_hs_secrets;
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-    mbedtls_ssl_tls13_early_secrets early_secrets;
-
     int early_data;     /*!< Early data indication:
                          * 0  -- MBEDTLS_SSL_EARLY_DATA_DISABLED (for no early data), and
                          * 1  -- MBEDTLS_SSL_EARLY_DATA_ENABLED (for use early data)