minor symfony#58695 [Runtime] Remove unused SKIPIF from dotenv_overload.phpt (Valmonzo)

This PR was merged into the 6.4 branch.

Discussion
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[Runtime] Remove unused `SKIPIF` from `dotenv_overload.phpt`

| Q             | A
| ------------- | ---
| Branch?       | 6.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        |
| License       | MIT

Since`Runtime` requires `Dotenv` 5.4 version, this condition is useless because `Dotenv` introduced a fourth parameter in 5.4

Commits
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3c69ee7 [Runtime] Remove unused `SKIPIF` from `dotenv_overload.phpt`

Author: nicolas-grekas

src/Symfony/Component/Runtime/Tests/phpt/dotenv_overload.phpt

@@ -1,7 +1,5 @@
 --TEST--
 Test Dotenv overload
---SKIPIF--
-<?php require dirname(__DIR__, 6).'/vendor/autoload.php'; if (4 > (new \ReflectionMethod(\Symfony\Component\Dotenv\Dotenv::class, 'bootEnv'))->getNumberOfParameters()) die('Skip because Dotenv version is too low');
 --INI--
 display_errors=1
 --FILE--