Clean skippable tests that are never skipped

Author: fancyweb

Tests/Command/ServerDumpCommandTest.php

@@ -23,10 +23,6 @@ class ServerDumpCommandTest extends TestCase
      */
     public function testComplete(array $input, array $expectedSuggestions)
     {
-        if (!class_exists(CommandCompletionTester::class)) {
-            $this->markTestSkipped('Test command completion requires symfony/console 5.4+.');
-        }
-
         $tester = new CommandCompletionTester($this->createCommand());
 
         $this->assertSame($expectedSuggestions, $tester->complete($input));