diff --git a/php/tests/PreviouslyGeneratedClassTest.php b/php/tests/PreviouslyGeneratedClassTest.php
deleted file mode 100644
index 8c77229a39cd4..0000000000000
--- a/php/tests/PreviouslyGeneratedClassTest.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-
-require_once('test_base.php');
-require_once('test_util.php');
-
-class PreviouslyGeneratedClassTest extends TestBase
-{
-    #########################################################
-    # Test compatibility for previously unreserved words.
-    #########################################################
-
-    public function testPrefixForReservedWords()
-    {
-        // In newer versions of PHP, we cannot reference the old class name.
-        if (version_compare(phpversion(), '8.2.0', '>=')) {
-            $this->markTestSkipped('readonly is reserved in PHP >= 8.2');
-        }
-
-        // For older versions of PHP, verify that we can reference the
-        // original class name.
-        eval('
-          $m = new \Previous\readonly();
-          $this->assertTrue(true);
-        ');
-
-        // If execution reaches this line, it means no exception was thrown.
-        // This assertion prevents PHPUnit from marking the test as risky.
-        $this->assertTrue(true);
-    }
-}