test: remove random timer in test-tls-fast-writing

test-tls-fast-writing can fail on a heavily-loaded system due to an
arbitrary 1-second timeout. Remove the arbitrary timeout.

PR-URL: #15138
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: Trott

test/parallel/test-tls-fast-writing.js

@@ -37,11 +37,6 @@ const server = tls.createServer(options, onconnection);
 let gotChunk = false;
 let gotDrain = false;
 
-setTimeout(function() {
-  console.log('not ok - timed out');
-  process.exit(1);
-}, common.platformTimeout(1000));
-
 function onconnection(conn) {
   conn.on('data', function(c) {
     if (!gotChunk) {