There were some dependencies that are now automatically satisfied by the
detect_required_features() function.
After this check there should be no redundant requirement for:
- requires_pk_alg "ECDSA"
- requires_any_configs_enabled $TLS1_2_KEY_EXCHANGES_WITH_ECDSA_CERT
- requires_any_configs_enabled $TLS1_2_KEY_EXCHANGES_WITH_CERT
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>