README.md: Update tests section

Signed-off-by: Ronald Cron <[email protected]>

Author: ronald-cron-arm

README.md

@@ -202,7 +202,6 @@ For machines with a Unix shell and OpenSSL (and optionally GnuTLS) installed, ad
 
 -   `tests/ssl-opt.sh` runs integration tests for various TLS options (renegotiation, resumption, etc.) and tests interoperability of these options with other implementations.
 -   `tests/compat.sh` tests interoperability of every ciphersuite with other implementations.
--   `tests/scripts/test-ref-configs.pl` test builds in various reduced configurations.
 -   `tests/scripts/depends.py` test builds in configurations with a single curve, key exchange, hash, cipher, or pkalg on.
 -   `tests/scripts/all.sh` runs a combination of the above tests, plus some more, with various build options (such as ASan, full `mbedtls_config.h`, etc).