Firefox is my favorite browser, i use it a lot for searching using the address bar, i would just type what i am looking for and i would get the results using Google Search.
Firefox uses Google as the default search engine. But recently, this changed, instead of Google search, i get Bing, the new(just the name) search engine from Microsoft.
If you are in the same scenario as me, let me show you how to change or remove Bing as the default search engine in the address bar.
Here's how. I am using quotes just for highlighting.
Open Firefox, in the address bar, type "about:config", if it does not work, add a space(push the Space Bar) after config "about:config ", then hit enter.