2Factor Authentication--I DON'T WANT IT

Using a respectable password is enough. 2-factor authentication is slowing down my security response as I dither with bringing up an app to receive the code, then enter the code. Two minutes after an event–which is a security eternity–I’m able to get to my screen.

I don’t want this. It is counterproductive. How do I get rid of this requirement for which I never once asked?