It'd be great if I could remove this ugly bar at the bottom of url suggestions input field (the one with "Search XXX in..." and search engine icons if any).
Visit "about:preferences#search" and then uncheck every search engine under "One-Click Search Engines" list.
Okay, I'm stupid. For some reason I never even tried to uncked _all_ of them. Always been keeping Google, thinking it should be there for search in the url bar to work.
Thanks!
Use DuckDuckGo as the default search engine, then you can use the "Bang"[0] notation to search using other services.