Remove the File Test column

So I have no data coming in on the files column and I would like to remove it from the display.

While searching I found this:

I don't want to display column foo in my display. How do I do that ? A. Add the entry NOCOLUMNS:foo,bar to hide column foo and bar.

so my command would be

NOCOLUMNS:files

Is this correct and which file do I add it to?