About the author
After restoring a backup on Note 4, I'm locked out of it via a pin. When using the pin that I remembered I set, it didn't work.
So, I'm left with no choice but to try and figure out how to remove it.
Instructions at MIUI didn't work.
So, I moved out these files from /data/system:
These didn't work, and it seemed the eventual files that helped unlock my Note 4 were moving away these files in /data/system: