Remove the PHP_ROUND_* constants added for PHP 8.4+

Author: TimWolla

ext/standard/basic_functions.stub.php

@@ -375,26 +375,6 @@
  * @cvalue PHP_ROUND_HALF_ODD
  */
 const PHP_ROUND_HALF_ODD = UNKNOWN;
-/**
- * @var int
- * @cvalue PHP_ROUND_CEILING
- */
-const PHP_ROUND_CEILING = UNKNOWN;
-/**
- * @var int
- * @cvalue PHP_ROUND_FLOOR
- */
-const PHP_ROUND_FLOOR = UNKNOWN;
-/**
- * @var int
- * @cvalue PHP_ROUND_TOWARD_ZERO
- */
-const PHP_ROUND_TOWARD_ZERO = UNKNOWN;
-/**
- * @var int
- * @cvalue PHP_ROUND_AWAY_FROM_ZERO
- */
-const PHP_ROUND_AWAY_FROM_ZERO = UNKNOWN;
 
 /* crypt.c */