Ray recommends shows from channels it thinks you have. This is determined when you first setup Ray and select your TV provider and premium channels. Ray does not know your specific channel package, and so sometimes recommends channels that you don't have. This can be quickly adjusted so that you can hide channels you don't subscribe to or simply don't like.
From the Info screen of any show on this channel, you can scroll to the bottom and select "Hide channel from my guide." This means that shows from this channel will no longer show up in recommendations or search results.
You can also adjust channels in settings. Learn more in How to Hide (and Unhide) Channels.