Disable fontawesome

Hello everyone, I've a problem with fontawesome.

I have to migrate a custom theme that work fine with Elgg 1.10 to Elgg 2.3. But Icons are duplicate and stacked. This theme have image as icons, and there is a fontawesome character on it.

How can I remove the fa- class. I've search on the whole Elgg project, but didn't find where the fa-comment(for example) is defined. I really don't understand how these icons is call.

Thanks by advance.

Beginning Developers

Beginning Developers

This space is for newcomers, who wish to build a new plugin or to customize an existing one to their liking