When I use :vs to split the screen in vim, there is a bar between the two windows that distracts me and uses up some screen real estate. I have seen in screenshots that it can be removed, but how?
Ideally it would look something like this:

Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
You cannot get rid of it completely. Only highlight it in such a color so it fits with the background / foreground, and you don’t notice it. But it will still be there.