no Gtk hackfest for now

[Ryan Lortie <desrt desrt ca>]

hi all,

I just sent an email to foundation-announce about Boston Summit being in
Montréal.  We're not going to attach a Gtk hackfest to that since the
notice is short and we already know that some important participants can
not attend.

The plan for now seems to be to have one early next year.

Cheers