Where do the red squares come from when a monster casts certain skills?

[Daraen 7]

I'd like to know where this thing came from and remove it. I find it totally disturbing :/
This appears when a monster casts certain skills such as:
Pulse Strike or Earthpike

Thank you for your help.

Edited November 1, 2020 by Daraen

[Dduwsmitt 4]

you need to find the skill on skill_db.conf and change ShowSkillScale set to false.
 

SkillInfo: {
        ShowSkillScale: false
    }

 

[Daraen 7]

I didn't know it came from there.
I am from rAthena and this option does not exist.
thanks dude.