Remove all deprecated items

[daverodgman]

As per https://github.com/Mbed-TLS/mbedtls/issues/6792#issuecomment-1531159865

• [ ] mbedtls_asn1_free_named_data() -> use mbedtls_asn1_free_named_data_list() or mbedtls_asn1_free_named_data_list_shallow() instead
• [x] mbedtls_asn1_write_algorithm_identifier() → use mbedtls_asn1_write_algorithm_identifier_ext() instead: https://github.com/Mbed-TLS/mbedtls/issues/7963
• [x] MBEDTLS_PSA_CRYPTO_SE_C → use the unified driver interface instead https://github.com/Mbed-TLS/mbedtls/issues/8151
• [ ] MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT -> let's only support the standard version
• [ ] mbedtls_cipher_setup_psa() -> let's see how that evolves with driver-only ciphers work
• [ ] compat-2.x.h -> just remove
• [ ] mbedtls_pkcs5_pbkdf2_hmac() -> use mbedtls_pkcs5_pbkdf2_hmac_ext() instead (of the PSA Crypto API)
• [ ] mbedtls_ssl_conf_curves() -> use mbedtls_ssl_conf_groups() instead
• [ ] mbedtls_ssl_conf_max/min_version() -> use mbedtls_ssl_conf_max/min_tls_version() instead
• [ ] mbedtls_x509write_crt_set_serial() -> use mbedtls_x509write_crt_set_serial_raw() instead

Also:

• [ ] review after release of 3.6 LTS for any other deprecations not mentioned above

[mpg]

review after release of 3.6 LTS for any other deprecations not mentioned above

Note: some functions* use MBEDTLS_DEPRECATED but not \deprecated (and perhaps the other way round happens as well), so we should be careful to use multiple methods when looking for deprecated items.

• I'm thinking about mbedtls_ssl_conf_sig_hashes() here.