minor #58374 Remove useless parent method calls in tests (alexandre-d…

…aubois)

This PR was merged into the 7.2 branch.

Discussion
----------

Remove useless parent method calls in tests

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        | -
| License       | MIT

The vast majority of tests don't call these parent methods, because they are no op. There are a few places where they are called, let's remove them?

Commits
-------

b54596f604 Remove useless parent method calls in tests

Tests/Caster/DateCasterTest.php

@@ -29,15 +29,11 @@ class DateCasterTest extends TestCase
 
     protected function setUp(): void
     {
-        parent::setUp();
-
         $this->previousTimezone = date_default_timezone_get();
     }
 
     protected function tearDown(): void
     {
-        parent::tearDown();
-
         date_default_timezone_set($this->previousTimezone);
     }