test: remove custom message from assertion

The custom message means that the values involved are not reported.
Remove the custom message for a more detailed error message.

PR-URL: #16824
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Anatoli Papirovski <[email protected]>
Reviewed-By: Gireesh Punathil <[email protected]>
Reviewed-By: Rich Trott <[email protected]>

Author: Marsup

test/addons/async-hooks-promise/test.js

@@ -34,8 +34,7 @@ const hook1 = async_hooks.createHook({
 // Check that the internal field returns the same PromiseWrap passed to init().
 assert.strictEqual(
   binding.getPromiseField(Promise.resolve(1)),
-  pwrap,
-  'Unexpected PromiseWrap');
+  pwrap);
 
 hook1.disable();