Yes you can remove the light source reflecting from a directional light if you:
- Click to select the light.
- Then find “specular scale” in its details panel and set it to zero.
- Also note that in the current documentation for directional lights it says “min roughness”
I am in Unreal 4.22.3 and I think they changed it to “specular scale”. Looks like they haven’t
updated the documentation yet.