Remove guard for TLS 1.3 specific declarations

We only guard the implementations of modules, not their declarations.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index c6847ba..188b947 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -399,9 +399,6 @@
 #define MBEDTLS_SSL_MAX_IV_LENGTH    16
 #define MBEDTLS_SSL_MAX_KEY_LENGTH   32
 
-
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
-
 /**
  * \brief   The data structure holding the cryptographic material (key and IV)
  *          used for record protection in TLS 1.3.
@@ -423,7 +420,6 @@
                      *   server_write_iv, in Bytes. */
 };
 typedef struct mbedtls_ssl_key_set mbedtls_ssl_key_set;
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
 
 /*
  * This structure contains the parameters only needed during handshake.
diff --git a/library/ssl_tls13_keys.h b/library/ssl_tls13_keys.h
index 4bd2d47..33becd6 100644
--- a/library/ssl_tls13_keys.h
+++ b/library/ssl_tls13_keys.h
@@ -19,8 +19,6 @@
 #if !defined(MBEDTLS_SSL_TLS1_3_KEYS_H)
 #define MBEDTLS_SSL_TLS1_3_KEYS_H
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL)
-
 /* This requires MBEDTLS_SSL_TLS1_3_LABEL( idx, name, string ) to be defined at
  * the point of use. See e.g. the definition of mbedtls_ssl_tls1_3_labels_union
  * below. */
@@ -264,6 +262,4 @@
                    const unsigned char *input, size_t input_len,
                    unsigned char *secret_new );
 
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */
-
 #endif /* MBEDTLS_SSL_TLS1_3_KEYS_H */