test: remove test case 0 from tls-cnnic-whitelist

I looks like this test has not worked as expected since commit
2bc7841d ("test: use random ports
where possible"). The test in that commit checked for `CERT_REVOKED`
which was returned by CheckWhitelistedServerCert.

CheckWhitelistedServerCert was later removed in commit
6ee4228c ("src: drop CNNIC+StartCom
certificate whitelisting").

I'm suggesting that this test case be removed as I don't think it is
valid anymore.

Backport-PR-URL: https://github.com/nodejs/node/pull/20776
PR-URL: https://github.com/nodejs/node/pull/19767


Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>