drop default MTA for Fedora 15

[Michael Cronenworth]

Matthew Miller wrote:
> If we follow the general state of things: "if a package might need
> something, toss it in as a requires!", this will totally defeat the purpose
> of the comps change, since it will get pulled in by something important at
> some point. Rsyslog, for example, can send output via e-mail.

That's *not* what I said. There are guidelines in place to prevent a 
"Requires" madness. This is a perfect opportunity for you to investigate 
"Recommended" for RPM.

>
> Having a very simple mail-queue-and-relay program as an alternative to
> sendmail seems like a better choice than just ditching it.
>

I'll just yum remove that, too. Thanks for wasting 30 seconds of my life.