Tool to remove 100% duplicate sentences

Can we have a tool like a button to click to identify or highlight 100% identical same setences present and wrote by Scalenut in the content? There are lots of 100% same exact sentences written by Scalenut thus - A button to highlight those 100% same exact sentences - A button to remove all other 100% identical same sentences will be helpful. Having duplicate content issue on page, on same post, is a serious SEO issue.