Revert "Update versions for PHP 8.0.21"

This reverts commit 6eedacdf15.

ext/spl/tests/arrayObject___construct_basic1.phpt

@@ -1,52 +0,0 @@
---TEST--
-SPL: ArrayObject::__construct basic usage.
---FILE--
-<?php
-echo "--> No arguments:\n";
-var_dump(new ArrayObject());
-
-echo "--> Object argument:\n";
-$a = new stdClass;
-$a->p = 'hello';
-var_dump(new ArrayObject($a));
-
-echo "--> Array argument:\n";
-var_dump(new ArrayObject(array('key1' => 'val1')));
-
-echo "--> Nested ArrayObject argument:\n";
-var_dump(new ArrayObject(new ArrayObject($a)));
-?>
---EXPECT--
---> No arguments:
-object(ArrayObject)#1 (1) {
-  ["storage":"ArrayObject":private]=>
-  array(0) {
-  }
-}
---> Object argument:
-object(ArrayObject)#2 (1) {
-  ["storage":"ArrayObject":private]=>
-  object(stdClass)#1 (1) {
-    ["p"]=>
-    string(5) "hello"
-  }
-}
---> Array argument:
-object(ArrayObject)#2 (1) {
-  ["storage":"ArrayObject":private]=>
-  array(1) {
-    ["key1"]=>
-    string(4) "val1"
-  }
-}
---> Nested ArrayObject argument:
-object(ArrayObject)#2 (1) {
-  ["storage":"ArrayObject":private]=>
-  object(ArrayObject)#3 (1) {
-    ["storage":"ArrayObject":private]=>
-    object(stdClass)#1 (1) {
-      ["p"]=>
-      string(5) "hello"
-    }
-  }
-}