Remove outdated note about direct manipulation of private members.

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
diff --git a/include/mbedtls/rsa.h b/include/mbedtls/rsa.h
index 08db213..d3b695e 100644
--- a/include/mbedtls/rsa.h
+++ b/include/mbedtls/rsa.h
@@ -82,10 +82,6 @@
 
 /**
  * \brief   The RSA context structure.
- *
- * \note    Direct manipulation of the members of this structure
- *          is deprecated. All manipulation should instead be done through
- *          the public interface functions.
  */
 typedef struct mbedtls_rsa_context
 {