test: remove error messages for readability

PR-URL: https://github.com/nodejs/node/pull/16022
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

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

@@ -13,16 +13,14 @@ if (process.env.NODE_TEST_WITH_ASYNC_HOOKS) {
 // Baseline to make sure the internal field isn't being set.
 assert.strictEqual(
   binding.getPromiseField(Promise.resolve(1)),
-  0,
-  'Promise internal field used despite missing enabled AsyncHook');
+  0);
 
 const hook0 = async_hooks.createHook({}).enable();
 
 // Check that no PromiseWrap is created when there are no hook callbacks.
 assert.strictEqual(
   binding.getPromiseField(Promise.resolve(1)),
-  0,
-  'Promise internal field used despite missing enabled AsyncHook');
+  0);
 
 hook0.disable();
 
@@ -47,6 +45,5 @@ hook1.disable();
 setImmediate(() => {
   assert.strictEqual(
     binding.getPromiseField(Promise.resolve(1)),
-    0,
-    'Promise internal field used despite missing enabled AsyncHook');
+    0);
 });