You don't need to delete any file, but it's best to back it up.
"Remove Damaged Entities": {
"Enabled": false,
"Exclude Building Blocks": true, /// It can be deleted regardless of the health percentage of the building. . .
"Percentage (Can be removed when (health / max health * 100) is not less than it)": 90.0
},
So I'm still confused, what does exclude building blocks do if set to true/false, and how does it affect the above and below parameters?
Also, how do I make the hammer automatically equip once someone types /remove, it used to do it, but it doesn't anymore? I'm using hammer-only mode, if that wasn't clear by this question.