Location bar in firefox is greatly enhanced to save you from extra typing and effort by suggesting previous history and bookmarks by default, but it could be case when you may not want firefox to suggest history or existing bookmarks when you type in firefox location bar.
Here is how you can do it, simply by navigation to firefox configuration options, follow the procedure given below
1. Open Firefox, Go to File Menu >> Tools >> Options
2. Click Privacy, and select what do you want to see in suggestions when you type in location bar or address bar in firefox
3. select the what ever you want to see in the above drop down and click ok
4. that’s it done.