How can I get capture-link to stop bugging me about mairix?

[Tory S. Anderson]

I upgraded orgmode recently and added org-contrib to my loading. I'm not sure 
if that's related or not, but suddenly, when I invoke org-capture on a Gnus 
message (which used to happen seamlessly) suddenly I am getting the following 
selection message, asking me whether I want org-mairix-store-gnus-link or the 
old working  default org-gnus-store-link . This is the first time I have ever 
heard of Mairix, and I can't find any customizations to set to get it to stop 
asking me.

http://images.toryanderson.com/org-link-mairix.png

How can I get it to stop asking me to select org-gnus-store-link?

- Tory