[pqm-submit:MERGE] Remove default --message

[Ian Clatworthy]

John Arbash Meinel wrote:

> The impetus for this was because Andrew just successfully did:
> 
> bzr pqm-submit "This is a nice long commit message"
> 
> However, it thought that was a filename in the current working tree, and
> sent a message for the last commit on the branch.
> 
> I didn't want to push this automatically without telling people, because
> it does disallow 'bzr pqm-submit' with no -m/--message.

Which is a bit sad because I use the default msg 99% of the time. Can't
please all the people all the time I guess. :-)

Ian C.