Honestly, I doubt removing the ratings button will increase actual reviews. What it WILL do is remove a tool used by some people to vote a story up or down because they are either rabid fanpoodles or are harassing an author. Both scenarios are sadly endemic, and removing the tool whereby those scenarios can exist is wise.
If we want to increase reviews, we need to make the commitment ourselves to read and review the stories posted by other authors. It does not take a huge leap of logic to understand that creating an atmosphere where reviews are welcomed by an author will also lead to more reviews. Make a review reply thread, and talk with your readers. Before you hit that "Delete" button on a review, stop and consider that the reviewer put themselves on the line a bit by stepping forward to comment. If they chose to remain anonymous, but otherwise left a review, think about WHY people choose to remain anonymous. Perhaps they had a bad experience with an author who took umbrage at a review. Perhaps they do not wish to have anything connected with them come up on a Google search. Or perhaps, like people who give to a cause but ask to remain anonymous, they simply don't feel the need to be in the limelight, so to speak.
If you foster an atmosphere of mutual respect with your reviewers, you'll find you do get more reviewers. I was told by one reviewer that they were not aware that I have a review reply thread because I didn't include it in my stories. It was a good point, and I'm now making an effort to do so. I'm never too old to learn, from readers, reviewers, and other authors.