If you are in the process of getting divorced, your insurance company will update your policy to reflect the changes. They may need to re-rate your policy. This could increase or decrease to your insurance. As insurance is dependent on a variety of factors, removing your wife will have an impact.
Since you will be making changes to your policy, now may also be a good time to look into other insurance companies. Comparing rates is a great way to ensure you’re getting the best price for the coverage you require.