how do i remove lighting in my game?

You can't remove it from your game. Its one of the most important services of your world A . Its Extras B . Its how bright the world is C . Its The Background with the clouds and the skybox D . Dynamic Lighting :D

You can not remove Lighting, it is like the Workspace, it is locked, and if try to it'll turn out like this in the Output; The Parent property of Lighting is locked --You can not remove it, else the game may not work properly

Easy. Go into Lighting, go to GlobalShadows, and uncheck the box. It will look worse but you need to keep going. In ambient put 150,150,150 or grey.Any shade of grey works well. White hurts your eyes and black is too dark. Any other color makes the sky look weird. 127,127,127 is the default ambient.

You can't remove lighting. The only way to remove "lighting" one might say, is to go to Lighting's properties>Check global shadows>Ambient>0, 0, 0 (Black)>Outdoor Ambient 0,0,0 (black.) And there you go. No programming is required.