How to turn off the passcode in experia z3 if none is not an option

[AC Question]

After pressing security, i put my pattern passcode on. I dont need passcode now, and none is not an option/available. How can i turn it off?

 

[belodion]

Try first Clear Credentials in Settings, Security.

 

[hallux]

If the device is encrypted you MUST have a PIN or pattern set (otherwise the encryption is pointless)