test: remove obsolete TLS test

The test involving melissadata.net was to make sure Node.js still
tolerated ValiCert 1024-bit certs. It has been several years since
melissadata.net used ValiCert as a root certificate and for that matter,
we removed ValiCert in a4dbf45 so it
would have broken then if it was still using it. The test is no longer
valid or needed and hasn't been for several years.

PR-URL: #39001
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>