Ending the 'Install Marketpress' nag message in CoursePress Pro

I am using Woocommerce to sell courses. I do not want to use MarketPress (already quite familiar with Woocommerce, thank you).

How do I end the nag message at the top of every admin screen demanding that I 'Install MarkePress plugin in order to sell courses.'?

I have attached a screen capture showing that I have selected Woocommerce as my selling choice and that the nag message continues.

Jeff