[skip if] Drop NEWS entry

The faulty commit never reached production, so we don't need a NEWS entry for
the fix.

Author: iluuu1994

NEWS

@@ -17,8 +17,6 @@ PHP                                                                        NEWS
 
 - Iconv:
   . Fixed bug GH-17399 (iconv memory leak on bailout). (iliaal)
-  . Fixed bug GH-21664 (iconv_mime_encode()/iconv_mime_decode()
-    crash with corrupt bailout state. (David Carlier)
 
 - Opcache:
   . Fixed bug GH-21158 (JIT: Assertion jit->ra[var].flags & (1<<0) failed in