Note: You must know your log in password/pin/etc., to actually do this and turn it off.
Go to "Display" and then "Lock Screen".
Choose "Screen Lock" and then enter your password/pin/etc.
Now tap "Next" and then in the options listed choose "None".
You should be good.
While you will still have a regular screen to touch to access the phone, you will no longer have to enter a password/pin/etc., every time.
Now if you don't know your password/pin/etc., we cannot assist in bypassing any log in. Please read the following thread...
http/www.tomsguide.com/forum/id-2311806/read-passwords-lock-codes-pin-numbers.html