Remove unused e_cert_trust_copy().
Remove unused e_cert_trust_set_trusted_server_ca().
Remove unused e_cert_trust_set_trusted_ca().
Remove unused e_cert_trust_set_trusted_peer().
Remove unused e_cert_trust_set_user().
Remove unused e_cert_trust_has_ca().
Remove unused e_cert_trust_has_user().
Remove unused e_cert_trust_set_valid_server_peer().
Remove unused e_cert_db_find_cert_by_nickname().
Remove unused e_cert_db_find_cert_by_key().
Remove unused e_cert_db_get_cert_nicknames().
Remove unused e_cert_db_find_email_encryption_cert().
Remove unused e_cert_db_find_email_signing_cert().
Remove unused e_cert_db_find_cert_by_email_address().
Remove unused e_cert_db_import_user_cert().
Remove unused e_cert_db_export_pkcs12_file().