ChangeLog.d/rm-truncated-hmac-ext.txt

Removals
   * Remove MBEDTLS_SSL_TRUNCATED_HMAC and also remove
     MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT config option. Users are better served by
     using a CCM-8 ciphersuite than a CBC ciphersuite with truncated HMAC.
     See issue #4341 for more details.