Fix unreported: Eevee Principled Shader: Crash because Intel does not like dead code

The reason for the crash is still a bit confusing, but on Windows with Intel HD Graphics 4000 it always happens when you enable `Use Nodes` or when you try to connect the Pricipled Shader node to the output without the `Subsurface Scattering` and `Subsurface Translucency` options enabled.

source/blender/draw/engines/eevee/shaders/lamps_lib.glsl

@@ -298,9 +298,7 @@ vec3 light_translucent(LightData ld, vec3 W, vec3 N, vec4 l_vector, float scale)
 {
 #if !defined(USE_TRANSLUCENCY) || defined(VOLUMETRICS)
 	return vec3(0.0);
-#endif
-
-#ifndef VOLUMETRICS
+#else
 	vec3 vis = vec3(1.0);
 
 	/* Only shadowed light can produce translucency */