We no longer have two (only partially distinct) implementations of ECJ-PAKE
cipher suites in TLS, now that the non-MBEDTLS_USE_PSA_CRYPTO implementation
is being removed.
We may want to add this testing back in the future, but we'll have to use an
old Mbed TLS instead of a differently-built one.
https://github.com/Mbed-TLS/mbedtls/issues/9740
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>