test: drop comments and rename tests

Signed-off-by: Erick Wendel <erick.workspace@gmail.com>

Author: ErickWendel

lib/internal/test_runner/mock.js

@@ -133,7 +133,7 @@ class MockTracker {
     options = kEmptyObject,
   ) {
     validateStringOrSymbol(methodName, 'methodName');
-    // In case object is a static class
+
     if (typeof object !== 'function') {
       validateObject(object, 'object');
     }

test/parallel/test-runner-mocking.js

@@ -318,7 +318,7 @@ test('spy functions can be bound', (t) => {
   assert.strictEqual(sum.mock.restore(), undefined);
   assert.strictEqual(sum.bind(0)(2, 11), 13);
 });
-test('spies on async class functions', async (t) => {
+test('mocks prototype methods on an instance', async (t) => {
   class Runner {
     async someTask(msg) {
       return Promise.resolve(msg);
@@ -350,7 +350,7 @@ test('spies on async class functions', async (t) => {
   assert.strictEqual(obj.someTask.mock, undefined);
 });
 
-test('spies on async class static functions', async (t) => {
+test('spies on async static class methods', async (t) => {
   class Runner {
     static async someTask(msg) {
       return Promise.resolve(msg);