Revert "Update NEWS and UPGRADING for __wakeup() deprecation of date classes"

This reverts commit 4bc060c.

Author: nicolas-grekas

NEWS

@@ -33,9 +33,6 @@ PHP                                                                        NEWS
 - Date:
   . Fixed GH-17159: "P" format for ::createFromFormat swallows string literals.
     (nielsdos)
-  . The __wakeup() magic method of DateTimeInterface, DateTime,
-    DateTimeImmutable, DateTimeZone, DateInterval, and DatePeriod has been
-    deprecated in favour of the __unserialize() magic method. (Girgias)
 
 - Exif:
   . Fix OSS-Fuzz #442954659 (zero-size box in HEIF file causes infinite loop).

UPGRADING

@@ -415,10 +415,6 @@ PHP 8.5 UPGRADE NOTES
     deprecated. This is because the associated timezone is ignored and always
     uses GMT.
     RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_date_rfc7231_and_datetimeinterfacerfc7231
-  . The __wakeup() magic method of DateTimeInterface, DateTime,
-    DateTimeImmutable, DateTimeZone, DateInterval, and DatePeriod has been
-    deprecated in favour of the __unserialize() magic method.
-    Related to RFC: https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_the_sleep_and_wakeup_magic_methods
 
 - FileInfo:
   . The finfo_close() function has been deprecated.