[HELP]: How to remove "your Device has been unlocked and can't be trusted"

I had rooted my One plus three with TWRP and now everytime I power ON/Restart OR try to switch in Recovery or Fastboot mode then this screen comes

"your device has been unlocked and can't be trusted"
please help me how to remove this screen permanently ...

Trusted Voice "OK Google" doesn't unlock the phone

Hello there, I've been trying make trusted voice work but it doesn't. When I say OK Google (screen is locked & off) google search appears and asks me what to search. When I say something it asks me to enter my pattern password and unlock it manually. Anyone knows the solution?

I'm running CM 13 6.0 in LG D802

Thank you for the help in advance.

Nexus 6p 'trusted voice'

Hey. Just checked out this trusted voice feature on my nexus 6p and it sucks ass. What the heck? Anyone who says okay google it recognises.... Where as my brothers one plus 2 works amazing my voice doesn't work friends doesn't work just his.... What I'm embarrassed that my more expensive full google phone that works ****tier with Googles own software? Idk if needs to be patched or whatever but currently it's better on the one plus 2

What do you guys think?