Hello!

I just wanted to mention that this commit (and more precisely the removal of the browser.search.region pref) has a little downside: instead of having the default US search engines, other search engines are added depending on your IP address.

This is particularly annoying when/if you use a VPN: each time you change the VPN server you connect to, some new localized search engines are added.

At least that's what I can see on my Firefox 108.0.1 on Arch Linux.