I accidentally created a 2nd sign in user & lost my auto sign in

I somehow lost the auto sign in on my laptop. When I tried to fix it in netplswiz, I accidentally created a duplicate 2nd sign in user. When I turn the laptop on, it gives me an error msg b/c it must be defaulting to the 2nd user. When I select my original user and sign in w/my MS password, it works. How do I get rid of the 2nd user and go back to auto sign in w/o a password/pin/facial recognition each time I turn on the laptop?