Reduce firefox spell checker languages on Fedora

I switch a lot between en_GB and nl_NL for spell checking in firefox in the context menu (right mouse click).

The context menu how-ever is really bulky showing all kind of languages I never use. Firefox running on Fedora is using file:/usr/share/myspell directory to populate this list.

One quick and dirty solution is to remove the ones I do not use. Since the are (luckily) all symlinks, this could be done in a breeze:

$ sudo find /usr/share/myspell -type l -delete