Remove shade overload impact on specular highlight as it is own its own.

materialsLibrary/materials/pbr/pbr.fragment.fx

@@ -1280,10 +1280,6 @@ vec3 surfaceEmissiveColor = vEmissiveColor;
     vec3 finalSpecular = vec3(0.0);
 #endif
 
-#ifdef OVERLOADEDSHADOWVALUES
-    finalSpecular = mix(finalSpecular, vec3(0.0), (1.0 - vOverloadedShadowIntensity.y));
-#endif
-
 #ifdef SPECULAROVERALPHA
     alpha = clamp(alpha + dot(finalSpecular, vec3(0.3, 0.59, 0.11)), 0., 1.);
 #endif