Sometimes a casino will remove a popular game and it will often be posted here. The one reporting the change likely will report all game changes of interest.
What is probably not a good idea is to ask a follow-up such as "Did they also take out the XYZ game too?" If they did, it likley would have been reported. If they didn't, best to go there and find out for yourself rather than bring attention to it.
Like it or not, there are members of this list that work for casinos.