How to keep LyX from using babel?

[Andreas Hilboll]

Hi,

I'm writing a document using the `copernicus_discussions.cls` document
class. This document class doesn't work when using babel. More
specifically, LaTeX gets sent into an infinite loop at the first `\cite`,
`\citet`, or `\citep` command.

So I need to keep LyX from automatically using babel. However, even though
in "Tools->Preferences->Language" I selected "Language package: None" and
disabled all checkboxes on that page, and even though in my document
preferences, I selected "Language package: None", the generated LaTeX
source still contains the line

    \usepackage{british,english]{babel}

How can I prevent LyX from inserting that line?

I'm using LyX 2.0.4 on Archlinux.

Thanks for your insight,
Andreas.