Editing software can't replace a human editor, but if you present him with a well-edited, highly-polished text, an editor will be able to focus on your content and ideas rather than your syntax and word choice.
There has been a debate recently about whether an editing app can or should ever replace a human editor. The answer is a resounding NO. Writer’s need real, actual people to help them develop their ideas and tell their stories. That will never change. But there are some areas where an editing tool can, in my opinion, blow a human editor out of the water. You should think of it as a two step process: use the editing tool to improve the technical elements of your writing so that your human editor is freed up to focus on content and style.