The light in the middle of the runway 17/35 is easy to fix using WED as it's a taxiway segment defined with lights. Probably just a slight oversight during the edition process.
Just select the two nodes on each side of the runway and remove the lights in the side panel (object property) - it will change from a blue dotted line to a green line/segment (no dotted line (lights) should cross any runway).
The other lights are part of the generic runway lights but I didn't manage to remove them - but I'm not familiar with WED tools and functions, so maybe there's a simple solution.
From what I've read, if a taxiway crosses a runway it should remove the unnecessary lights. Unfortunately during my tests it removed all the runway side/border lights while extending the runway polygon towards the center of the runway (I just dragged a node).
The distance signs were still there. I don't know if there's a way to specifically exclude a given light or sign.
Any solution would be very welcome