I've been reading the following post and want to delete unneccessary language packs.

Speed Up Your iPhone/iPod by Removing Launch Daemons

However, after reading about 12 pages; none of the posts say what directory(s) the language packs are in. They all mention downloading a script and running it. I would like to delete the language packs manually and don't know where they are.

I have a 3gs with 4.0.1 firmware.