remove older UPGRADING entry, bug #38409 is already fixed in 5.6

Author: weltling

UPGRADING

@@ -608,9 +608,6 @@ Other
 5. Changed Functions
 ========================================
 
-- parse_ini_file():
-- parse_ini_string():
-  . Added scanner mode INI_SCANNER_TYPED to yield typed .ini values.
 - unserialize():
   . Added second parameter for unserialize function 
     (RFC: https://wiki.php.net/rfc/secure_unserialize) allowing to specify