Disable admin notification about not having a CDN for S3?

Is it possible to disable the admin notification about not having a CDN setup for S3 object? I use Linode S3 and they don’t really incur extra charges for not having a separate CDN. I will look into getting a CDN but as we use CF for our domains and Discourse does not work with it (I tried turning off all the optimization and still couldn’t get it to work), it means that I have to setup a separate CDN, which I’ve also looked into but didn’t get very far.