test: remove disabled tls_server.js

Remove tls_server.js that has been disabled for about 6 years. It
appears to have worked in concert with some other file which has since
been removed. It seems to create a server and set up a bunch of
listeners, but it does not appear to have code that connects to the
server and triggers any of those listeners.

PR-URL: #12275
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Yuta Hiroto <[email protected]>
Reviewed-By: Refael Ackermann <[email protected]>
Reviewed-By: Alexey Orlenko <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Gibson Fahnestock <[email protected]>