[ci-skip] Fix for bug #80047 was included in previous release

We are removing the entry in 8.0.23, as the fix was included
in the 8.0.22 release. Given that an entry already exists, we
are just deleting extra lines.

NEWS

@@ -2,10 +2,6 @@ PHP                                                                        NEWS
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 ?? ??? 2022, PHP 8.0.23
 
-- Date:
-  . Fixed bug #80047 (DatePeriod doesn't warn with custom DateTimeImmutable).
-    (Derick)
-
 - DBA:
   . Fixed LMDB driver memory leak on DB creation failure (Girgias)
   . Fixed bug GH-9155 (dba_open("non-existing", "c-", "flatfile") segfaults).