[Groff] www.tmac

[Bernd Warken]

`mwww.tmac' is misleading and is actually not needed, `www.tmac' is
enough.  The additional initial 'm' handling makes only sense for
classical package names that start with an `m'.  For example, the
`man' macro package was called `tmac.an', so it is useful to have two
macro packages, `an.tmac' and `man.tmac'.  But, as `www' does not have
an initial `m', this does not apply.

`mwww.tmac' can safely be removed and `groff_mwww(7)' should be renamed
to `groff_www(7)'

Bernd Warken