Remove old workaround for vertex color attribute

Author: matas-tunkevicius

UnityProject/Assets/UseRenderingPlugin.cs

@@ -99,12 +99,6 @@ private void SendMeshBuffersToPlugin ()
 		// by default they are immutable and only GPU-readable).
 		mesh.MarkDynamic ();
 
-		// Make sure to have vertex colors so that the plugin can rely on a known
-		// vertex layout (position+normal+color+UV). Since Unity 2019.3 it's easier
-		// since there are APIs to query all that info.
-		var colors = mesh.colors;
-		mesh.colors = colors;
-
 		// However, mesh being dynamic also means that the CPU on most platforms can not
 		// read from the vertex buffer. Our plugin also wants original mesh data,
 		// so let's pass it as pointers to regular C# arrays.