Remove test_full_no_bignum as duplicate
of the test of the reference config
confgi-symmetric-only.h and
component_test_psa_crypto_config_accel_ecc_no_bignum().
Specifically, component_test_full_no_bignum was
added as part of preparation work for that component.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>