Getting rid of extra heads after repository conversion

[Thomas Klausner]

Hi!

I used fromcvs to convert some local CVS repositories to hg, and a few
of them now have two heads. These are from old development branches
that have been merged (in CVS) a long time ago, but I think this
information cannot be gleaned from the CVS files.

Now I'm looking for an easy way to get rid of the extra heads.
I don't care particularly that the merge is with the correct version
in the past (though if it's easily possible, I might do that).
When I do a simple 'hg merge' I get lots of removed files and changes,
about which I don't care, and I'm not quite sure how to undo these
automatic merge changes.

Can someone please tell me how to get rid of the extra heads without
much work?

Thanks,
 Thomas