(UE4-27) how do i get rid of directional lighting and ambient lighting and make my scene completely dark so that then i will be able to display the base color of the textures and shet (UE4-27)

basically i want ps1 lighting in a nutshell in ue4 but the reason i want ps1 is cause i want to make my game look like a ps2 game cause ps2 had the exact same lighting as ps1 (i think) but with better textures and better polygons and better resolution