test: simplify test-tls-client-default-ciphers

PR-URL: #14928
Ref: #12376
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

test/parallel/test-tls-client-default-ciphers.js

@@ -37,11 +37,8 @@ function test1() {
     throw new Done();
   };
 
-  try {
-    tls.connect(common.PORT);
-  } catch (e) {
-    assert(e instanceof Done);
-  }
+  assert.throws(tls.connect, Done);
+
   assert.strictEqual(ciphers, tls.DEFAULT_CIPHERS);
 }
 test1();