[S02] remove useless information about Whatever

The synopsis pointed out that Whatever derives from Any (which is
true), and that nothing derives from Whatever (which is true).

If nothing derives from Whatever, does that mean nothing *can*
derive from Whatever? RT #105004 determined that it doesn't.

Then what does it mean? Only that before someone writes a class
that derives from Whatever, no class derives from Whatever. While,
true, that's not a very exciting statement, and possibly
misleading. Removing.