I'll start first. Yesterday Tim answered my question and solved my issue. I clicked thumbs up to thank him.
If you want to remove your "thumbs up" it opens new window sayingInformation
You have just thanked for the post.
If you click Yes, new window with messageRemove your thanks:
Are you sure you want to remove your thanks?
Personal preference here, but that is too many steps for just like/remove like.Information
You have just removed your thank.