test: remove messages in assert.strictEqual

PR-URL: #16014
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

test/parallel/test-tls-pfx-gh-5100-regr.js

@@ -19,11 +19,7 @@ const server = tls.createServer({
  requestCert: true,
  rejectUnauthorized: false
 }, common.mustCall(function(c) {
- assert.strictEqual(
- c.authorizationError,
- null,
- 'authorizationError must be null'
- );
+ assert.strictEqual(c.authorizationError, null);
  c.end();
 })).listen(0, function() {
  const client = tls.connect({