Apply suggestions from code review

Co-authored-by: Jordan Harband <ljharb@gmail.com>
Co-authored-by: Moshe Atlow <moshe@atlow.co.il>

Author: 3 people

doc/api/test.md

@@ -1579,7 +1579,7 @@ added:
 Enables timer mocking for the specified timers.
 
 * `timers` {Array} An optional array containing the timers to mock.
-  The currently supported timer values are `'setInterval'`, `'setTimeout'`
+  The currently supported timer values are `'setInterval'`, `'setTimeout'`,
   and `'setImmediate'`.  If no value is provided, all timers (`'setInterval'`,
   `'clearInterval'`, `'setTimeout'`, `'clearTimeout'`, `'setImmediate'`,
   and `'clearImmediate'`) will be mocked by default.

lib/internal/test_runner/mock/mock_timers.js

@@ -52,7 +52,6 @@ const SUPPORTED_TIMERS = ['setTimeout', 'setInterval', 'setImmediate'];
 const TIMERS_DEFAULT_INTERVAL = {
   __proto__: null,
   setImmediate: -1,
-  nextTick: -2,
 };
 
 class MockTimers {