How to remove screen lock previously set using Android Device Manager?

I placed a password on my phone from the online android device manager. I was just testing it out, and now I can't remove it. I keep reading go to settings > security > screen lock but that is not an option on my phone. I can remove android device manager from my device administrators, and under the password section the only option is to make passwords visible. I have always had a password on my phone but I do not want this type of password on my phone. Please help!