There is an example in the moderncv package where the are no rule for the Banking style. Here is the file template_banking_red-norules. I would like to know how to remove the rules. Thank you!
In the same folder there is a template.tex, open it and find the part in the preamble where it says
% moderncv themes
\moderncvstyle{casual}
\moderncvcolor{blue}
First change the theme from casual to banking; next add the style-option norules.
Your final preamble should therefore contain
% moderncv themes
\moderncvstyle[norules]{banking}
\moderncvcolor{blue}
For further options and information about the style (and a way to manually manipulate it) have a look at moderncvstylebanking.sty, found online here.